{"product_id":"fish-sulfa","title":"Fish Sulfa (Fix Sulfa) SMZ\/TMP 960mg Fish Antibacterial","description":"\u003cstyle\u003e\n  .fph-product-copy {\n    --fph-orange: #e37111;\n    --fph-teal: #148d85;\n    --fph-green: #64ad82;\n    --fph-dark: #09213f;\n    --fph-text: #24374e;\n    --fph-muted: #64748b;\n    --fph-border: #dce3eb;\n    --fph-light: #f5f8fa;\n    --fph-teal-light: #eef8f6;\n    --fph-orange-light: #fff6ed;\n    --fph-white: #ffffff;\n\n    width: 100%;\n    max-width: 1675px;\n    margin: 0 auto;\n    padding-right: 40px;\n    padding-left: 40px;\n    color: var(--fph-text);\n    font-family: inherit;\n    font-size: 17px;\n    line-height: 1.7;\n    scroll-behavior: smooth;\n  }\n\n  .fph-product-copy,\n  .fph-product-copy * {\n    box-sizing: border-box;\n  }\n\n  .fph-product-copy section {\n    scroll-margin-top: 120px;\n  }\n\n  .fph-product-copy p {\n    margin: 0 0 18px;\n  }\n\n  .fph-product-copy strong {\n    font-weight: 750;\n  }\n\n  .fph-product-title {\n    margin: 0 0 26px;\n    color: var(--fph-dark);\n    font-size: clamp(34px, 4vw, 52px);\n    font-weight: 800;\n    line-height: 1.12;\n    letter-spacing: -0.025em;\n  }\n\n  .fph-section-title {\n    margin: 0 0 22px;\n    color: var(--fph-dark);\n    font-size: clamp(29px, 3vw, 40px);\n    font-weight: 800;\n    line-height: 1.2;\n    letter-spacing: -0.02em;\n  }\n\n  .fph-subtitle {\n    margin: 32px 0 16px;\n    color: var(--fph-dark);\n    font-size: 23px;\n    font-weight: 750;\n    line-height: 1.35;\n  }\n\n  .fph-lead {\n    color: #30445d;\n    font-size: 19px;\n    line-height: 1.8;\n  }\n\n  .fph-section {\n    padding: 55px 0;\n    border-top: 1px solid #edf0f3;\n  }\n\n  .fph-section:first-of-type {\n    border-top: 0;\n  }\n\n  .fph-toc {\n    display: flex;\n    align-items: center;\n    gap: 10px;\n    margin: 0 0 45px;\n    padding: 4px 0 10px;\n    overflow-x: auto;\n    scrollbar-width: none;\n  }\n\n  .fph-toc::-webkit-scrollbar {\n    display: none;\n  }\n\n  .fph-toc-label {\n    flex: 0 0 auto;\n    margin-right: 4px;\n    color: var(--fph-dark);\n    font-weight: 800;\n    white-space: nowrap;\n  }\n\n  .fph-toc a {\n    flex: 0 0 auto;\n    display: inline-flex;\n    align-items: center;\n    min-height: 48px;\n    padding: 10px 21px;\n    border: 1px solid var(--fph-border);\n    border-radius: 999px;\n    background: #f8fafc;\n    color: var(--fph-dark);\n    font-size: 16px;\n    text-decoration: none;\n    white-space: nowrap;\n    transition: 0.25s ease;\n  }\n\n  .fph-toc a:hover {\n    border-color: var(--fph-teal);\n    background: var(--fph-teal);\n    color: var(--fph-white);\n    transform: translateY(-2px);\n  }\n\n  .fph-glance {\n    margin: 0 0 55px;\n    overflow: hidden;\n    border: 1px solid var(--fph-border);\n    border-radius: 20px;\n    background: var(--fph-white);\n  }\n\n  .fph-glance-heading {\n    padding: 20px 24px;\n    background: linear-gradient(\n      135deg,\n      var(--fph-teal) 0%,\n      var(--fph-green) 100%\n    );\n    color: var(--fph-white);\n    font-size: 23px;\n    font-weight: 800;\n  }\n\n  .fph-glance-row {\n    display: grid;\n    grid-template-columns: 40% 60%;\n    border-top: 1px solid var(--fph-border);\n  }\n\n  .fph-glance-label,\n  .fph-glance-value {\n    padding: 16px 19px;\n  }\n\n  .fph-glance-label {\n    background: #f3f5f7;\n    color: var(--fph-dark);\n    font-weight: 750;\n  }\n\n  .fph-glance-value {\n    background: #f9fafb;\n  }\n\n  .fph-two-column {\n    display: grid;\n    grid-template-columns: repeat(2, minmax(0, 1fr));\n    gap: 22px;\n    margin-top: 28px;\n  }\n\n  .fph-info-box {\n    padding: 26px;\n    border: 1px solid var(--fph-border);\n    border-radius: 18px;\n    background: var(--fph-light);\n  }\n\n  .fph-info-box h3 {\n    margin: 0 0 14px;\n    color: var(--fph-dark);\n    font-size: 22px;\n    font-weight: 750;\n  }\n\n  .fph-info-box ul {\n    margin: 0;\n    padding-left: 21px;\n  }\n\n  .fph-info-box li {\n    margin: 8px 0;\n  }\n\n  .fph-highlight-note {\n    margin: 26px 0 0;\n    padding: 21px 23px;\n    border-left: 5px solid var(--fph-orange);\n    border-radius: 0 15px 15px 0;\n    background: var(--fph-orange-light);\n    color: #63310c;\n  }\n\n  .fph-order-note {\n    margin-top: 25px;\n    padding: 24px;\n    border: 1px solid #cde4de;\n    border-radius: 17px;\n    background: var(--fph-teal-light);\n  }\n\n  .fph-order-note p:last-child {\n    margin-bottom: 0;\n  }\n\n  .fph-comparison-grid {\n    display: grid;\n    grid-template-columns: repeat(4, minmax(0, 1fr));\n    gap: 18px;\n    margin-top: 28px;\n  }\n\n  .fph-comparison-card {\n    padding: 25px;\n    border: 1px solid #cfe2df;\n    border-radius: 18px;\n    background: linear-gradient(145deg, #eef8f6 0%, #ffffff 100%);\n  }\n\n  .fph-small-label {\n    display: block;\n    margin-bottom: 9px;\n    color: var(--fph-teal);\n    font-size: 12px;\n    font-weight: 800;\n    letter-spacing: 0.08em;\n    text-transform: uppercase;\n  }\n\n  .fph-comparison-card h3 {\n    margin: 0 0 10px;\n    color: var(--fph-dark);\n    font-size: 21px;\n    line-height: 1.35;\n  }\n\n  .fph-comparison-card p {\n    margin: 0;\n    color: var(--fph-muted);\n  }\n\n  .fph-benefits-grid {\n    display: grid;\n    grid-template-columns: repeat(3, minmax(0, 1fr));\n    gap: 20px;\n    margin-top: 28px;\n  }\n\n  .fph-benefit-card {\n    padding: 28px;\n    border: 1px solid var(--fph-border);\n    border-radius: 19px;\n    background: var(--fph-white);\n    box-shadow: 0 8px 28px rgba(15, 42, 70, 0.06);\n    transition: 0.3s ease;\n  }\n\n  .fph-benefit-card:hover {\n    transform: translateY(-5px);\n    box-shadow: 0 15px 38px rgba(15, 42, 70, 0.11);\n  }\n\n  .fph-benefit-number {\n    display: flex;\n    align-items: center;\n    justify-content: center;\n    width: 45px;\n    height: 45px;\n    margin-bottom: 18px;\n    border-radius: 50%;\n    background: var(--fph-orange);\n    color: var(--fph-white);\n    font-size: 15px;\n    font-weight: 800;\n  }\n\n  .fph-benefit-card:nth-child(2n) .fph-benefit-number {\n    background: var(--fph-teal);\n  }\n\n  .fph-benefit-card:nth-child(3n) .fph-benefit-number {\n    background: var(--fph-green);\n  }\n\n  .fph-benefit-card h3 {\n    margin: 0 0 11px;\n    color: var(--fph-dark);\n    font-size: 21px;\n    line-height: 1.35;\n  }\n\n  .fph-benefit-card p {\n    margin: 0;\n    color: var(--fph-muted);\n  }\n\n  .fph-summary-box {\n    margin-bottom: 28px;\n    padding: 26px;\n    border-radius: 18px;\n    background: linear-gradient(\n      135deg,\n      var(--fph-dark) 0%,\n      var(--fph-teal) 100%\n    );\n    color: var(--fph-white);\n  }\n\n  .fph-summary-box h3,\n  .fph-summary-box p {\n    color: var(--fph-white);\n  }\n\n  .fph-summary-box h3 {\n    margin: 0 0 12px;\n    font-size: 23px;\n  }\n\n  .fph-summary-box p:last-child {\n    margin-bottom: 0;\n  }\n\n  .fph-steps {\n    display: grid;\n    gap: 18px;\n  }\n\n  .fph-step {\n    display: grid;\n    grid-template-columns: 62px minmax(0, 1fr);\n    gap: 18px;\n    padding: 25px;\n    border: 1px solid #cfe2df;\n    border-radius: 18px;\n    background: #f1f9f7;\n  }\n\n  .fph-step-number {\n    display: flex;\n    align-items: center;\n    justify-content: center;\n    width: 48px;\n    height: 48px;\n    border-radius: 50%;\n    background: var(--fph-teal);\n    color: var(--fph-white);\n    font-size: 19px;\n    font-weight: 800;\n  }\n\n  .fph-step h3 {\n    margin: 2px 0 9px;\n    color: var(--fph-dark);\n    font-size: 22px;\n    line-height: 1.35;\n  }\n\n  .fph-step p:last-child {\n    margin-bottom: 0;\n  }\n\n  .fph-table-wrapper {\n    margin-top: 30px;\n    overflow-x: auto;\n    border: 1px solid var(--fph-border);\n    border-radius: 18px;\n  }\n\n  .fph-table {\n    width: 100%;\n    min-width: 680px;\n    border-collapse: collapse;\n    background: var(--fph-white);\n  }\n\n  .fph-table th,\n  .fph-table td {\n    padding: 16px 19px;\n    border-bottom: 1px solid var(--fph-border);\n    text-align: left;\n    vertical-align: top;\n  }\n\n  .fph-table th {\n    background: var(--fph-teal);\n    color: var(--fph-white);\n    font-weight: 750;\n  }\n\n  .fph-table tr:nth-child(even) td {\n    background: #f7f9fa;\n  }\n\n  .fph-table tr:last-child td {\n    border-bottom: 0;\n  }\n\n  .fph-timeline {\n    display: grid;\n    grid-template-columns: repeat(3, minmax(0, 1fr));\n    gap: 18px;\n    margin-top: 25px;\n  }\n\n  .fph-timeline-card {\n    padding: 25px;\n    border-radius: 18px;\n    background: var(--fph-teal);\n    color: var(--fph-white);\n  }\n\n  .fph-timeline-card:nth-child(2) {\n    background: var(--fph-green);\n  }\n\n  .fph-timeline-card:nth-child(3) {\n    background: var(--fph-orange);\n  }\n\n  .fph-timeline-card h3,\n  .fph-timeline-card p {\n    color: var(--fph-white);\n  }\n\n  .fph-timeline-card h3 {\n    margin: 0 0 10px;\n    font-size: 22px;\n  }\n\n  .fph-timeline-card p {\n    margin: 0;\n  }\n\n  .fph-pro-tip {\n    margin-top: 22px;\n    padding: 22px 24px;\n    border-radius: 17px;\n    background: linear-gradient(\n      135deg,\n      var(--fph-dark) 0%,\n      var(--fph-teal) 100%\n    );\n    color: var(--fph-white);\n  }\n\n  .fph-pro-tip p {\n    margin: 0;\n    color: var(--fph-white);\n  }\n\n  .fph-safety-grid {\n    display: grid;\n    grid-template-columns: repeat(2, minmax(0, 1fr));\n    gap: 18px;\n    margin-top: 27px;\n  }\n\n  .fph-safety-card {\n    padding: 25px;\n    border: 1px solid var(--fph-border);\n    border-radius: 18px;\n    background: var(--fph-white);\n  }\n\n  .fph-safety-card h3 {\n    margin: 0 0 10px;\n    color: var(--fph-teal);\n    font-size: 22px;\n  }\n\n  .fph-safety-card p:last-child {\n    margin-bottom: 0;\n  }\n\n  .fph-warning {\n    margin-top: 22px;\n    padding: 25px;\n    border: 1px solid #efc49c;\n    border-radius: 18px;\n    background: var(--fph-orange-light);\n  }\n\n  .fph-warning h3 {\n    margin: 0 0 10px;\n    color: #a84b06;\n    font-size: 22px;\n  }\n\n  .fph-warning p:last-child {\n    margin-bottom: 0;\n  }\n\n  .fph-policy-grid {\n    display: grid;\n    grid-template-columns: repeat(2, minmax(0, 1fr));\n    gap: 20px;\n    margin-top: 26px;\n  }\n\n  .fph-policy-card {\n    padding: 27px;\n    border: 1px solid var(--fph-border);\n    border-radius: 18px;\n    background: var(--fph-light);\n  }\n\n  .fph-policy-card h3 {\n    margin: 0 0 11px;\n    color: var(--fph-dark);\n    font-size: 22px;\n  }\n\n  .fph-policy-card a {\n    color: var(--fph-orange);\n    font-weight: 750;\n    text-decoration: none;\n  }\n\n  .fph-policy-card a:hover {\n    text-decoration: underline;\n  }\n\n  .fph-faq {\n    display: grid;\n    gap: 12px;\n    margin-top: 27px;\n  }\n\n  .fph-faq details {\n    overflow: hidden;\n    border: 1px solid var(--fph-border);\n    border-radius: 15px;\n    background: var(--fph-white);\n  }\n\n  .fph-faq summary {\n    position: relative;\n    padding: 19px 58px 19px 21px;\n    color: var(--fph-dark);\n    font-weight: 750;\n    cursor: pointer;\n    list-style: none;\n  }\n\n  .fph-faq summary::-webkit-details-marker {\n    display: none;\n  }\n\n  .fph-faq summary::after {\n    content: \"+\";\n    position: absolute;\n    top: 50%;\n    right: 21px;\n    color: var(--fph-teal);\n    font-size: 27px;\n    line-height: 1;\n    transform: translateY(-50%);\n  }\n\n  .fph-faq details[open] summary::after {\n    content: \"−\";\n  }\n\n  .fph-faq details[open] summary {\n    background: var(--fph-teal-light);\n  }\n\n  .fph-faq-answer {\n    padding: 0 21px 20px;\n    color: var(--fph-muted);\n  }\n\n  .fph-faq-answer p:last-child {\n    margin-bottom: 0;\n  }\n\n  .fph-bottom-line {\n    padding: 30px;\n    border-radius: 20px;\n    background: linear-gradient(\n      135deg,\n      var(--fph-teal) 0%,\n      var(--fph-green) 100%\n    );\n    color: var(--fph-white);\n  }\n\n  .fph-bottom-line h2,\n  .fph-bottom-line p {\n    color: var(--fph-white);\n  }\n\n  .fph-bottom-line h2 {\n    margin: 0 0 15px;\n    font-size: 32px;\n  }\n\n  .fph-bottom-line p:last-child {\n    margin-bottom: 0;\n  }\n\n  .fph-related-grid {\n    display: grid;\n    grid-template-columns: repeat(3, minmax(0, 1fr));\n    gap: 19px;\n    margin-top: 27px;\n  }\n\n  .fph-related-card {\n    display: flex;\n    flex-direction: column;\n    padding: 25px;\n    border: 1px solid var(--fph-border);\n    border-radius: 18px;\n    background: var(--fph-white);\n    box-shadow: 0 7px 24px rgba(15, 42, 70, 0.05);\n  }\n\n  .fph-related-card h3 {\n    margin: 0 0 10px;\n    color: var(--fph-dark);\n    font-size: 21px;\n    line-height: 1.35;\n  }\n\n  .fph-related-card p {\n    flex: 1;\n    color: var(--fph-muted);\n  }\n\n  .fph-related-card a {\n    margin-top: auto;\n    color: var(--fph-orange);\n    font-weight: 750;\n    text-decoration: none;\n  }\n\n  .fph-related-card a:hover {\n    text-decoration: underline;\n  }\n\n  .fph-browse-grid {\n    display: grid;\n    grid-template-columns: repeat(2, minmax(0, 1fr));\n    gap: 19px;\n    margin-top: 20px;\n  }\n\n  .fph-browse-card {\n    padding: 26px;\n    border-radius: 18px;\n    background: linear-gradient(\n      135deg,\n      var(--fph-teal) 0%,\n      var(--fph-green) 100%\n    );\n    color: var(--fph-white);\n  }\n\n  .fph-browse-card:nth-child(2) {\n    background: linear-gradient(\n      135deg,\n      var(--fph-orange) 0%,\n      #f09a47 100%\n    );\n  }\n\n  .fph-browse-card h3,\n  .fph-browse-card p,\n  .fph-browse-card a {\n    color: var(--fph-white);\n  }\n\n  .fph-browse-card h3 {\n    margin: 0 0 9px;\n    font-size: 22px;\n  }\n\n  .fph-browse-card a {\n    font-weight: 800;\n  }\n\n  .fph-image-note {\n    margin-top: 40px;\n    padding: 16px 20px;\n    border: 1px dashed var(--fph-border);\n    border-radius: 14px;\n    background: #fafbfc;\n    text-align: center;\n    font-weight: 700;\n  }\n\n  .fph-verification {\n    margin-top: 30px;\n    overflow: hidden;\n    border: 1px solid var(--fph-border);\n    border-radius: 20px;\n    background: var(--fph-white);\n  }\n\n  .fph-verification-header {\n    padding: 25px;\n    background: var(--fph-dark);\n    color: var(--fph-white);\n  }\n\n  .fph-verification-header h2 {\n    margin: 0 0 7px;\n    color: var(--fph-white);\n    font-size: 29px;\n  }\n\n  .fph-verification-header p {\n    margin: 0;\n    color: rgba(255, 255, 255, 0.88);\n  }\n\n  .fph-verification-body {\n    padding: 27px;\n  }\n\n  .fph-verification-grid {\n    display: grid;\n    grid-template-columns: repeat(2, minmax(0, 1fr));\n    gap: 18px;\n    margin: 24px 0;\n  }\n\n  .fph-verification-card {\n    padding: 23px;\n    border: 1px solid #cfe2df;\n    border-radius: 16px;\n    background: var(--fph-teal-light);\n  }\n\n  .fph-verification-card h3 {\n    margin: 0 0 9px;\n    color: var(--fph-teal);\n    font-size: 20px;\n  }\n\n  .fph-verification-card p {\n    margin: 0;\n  }\n\n  .fph-contact-link {\n    color: var(--fph-orange);\n    font-weight: 750;\n  }\n\n  .fph-educational-note {\n    margin-top: 24px;\n    padding: 20px 22px;\n    border-radius: 15px;\n    background: #eef3f7;\n    color: #42566d;\n    font-size: 15px;\n  }\n\n  .fph-reviewed {\n    margin-top: 18px;\n    color: var(--fph-muted);\n    font-size: 14px;\n  }\n\n  @media (max-width: 1050px) {\n    .fph-comparison-grid {\n      grid-template-columns: repeat(2, minmax(0, 1fr));\n    }\n\n    .fph-benefits-grid,\n    .fph-related-grid {\n      grid-template-columns: repeat(2, minmax(0, 1fr));\n    }\n  }\n\n  @media (max-width: 749px) {\n    .fph-product-copy {\n      padding-right: 18px;\n      padding-left: 18px;\n      font-size: 16px;\n      line-height: 1.65;\n    }\n\n    .fph-product-title {\n      font-size: 32px;\n    }\n\n    .fph-section {\n      padding: 39px 0;\n    }\n\n    .fph-section-title {\n      font-size: 28px;\n    }\n\n    .fph-toc-label {\n      display: none;\n    }\n\n    .fph-toc a {\n      min-height: 44px;\n      padding: 9px 17px;\n      font-size: 15px;\n    }\n\n    .fph-glance-row {\n      grid-template-columns: 1fr;\n    }\n\n    .fph-glance-label {\n      padding-bottom: 7px;\n    }\n\n    .fph-glance-value {\n      padding-top: 7px;\n    }\n\n    .fph-two-column,\n    .fph-comparison-grid,\n    .fph-benefits-grid,\n    .fph-timeline,\n    .fph-safety-grid,\n    .fph-policy-grid,\n    .fph-related-grid,\n    .fph-browse-grid,\n    .fph-verification-grid {\n      grid-template-columns: 1fr;\n    }\n\n    .fph-step {\n      grid-template-columns: 48px minmax(0, 1fr);\n      gap: 14px;\n      padding: 20px;\n    }\n  }\n\n  @media (prefers-reduced-motion: reduce) {\n    .fph-product-copy *,\n    .fph-product-copy *::before,\n    .fph-product-copy *::after {\n      transition: none !important;\n      animation: none !important;\n      scroll-behavior: auto !important;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"fph-product-copy\"\u003e\n\u003csection class=\"fph-section\" id=\"overview\"\u003e\n\u003ch1 class=\"fph-product-title\"\u003eFish Sulfa Forte (Fix Sulfa) Tablets, 960 mg\u003c\/h1\u003e\n\u003cnav class=\"fph-toc\" aria-label=\"On this page\"\u003e\u003cspan class=\"fph-toc-label\"\u003eOn this page:\u003c\/span\u003e \u003ca href=\"#overview\"\u003eOverview\u003c\/a\u003e \u003ca href=\"#fish-sulfa-vs-fix-sulfa\"\u003eFish Sulfa vs Fix Sulfa\u003c\/a\u003e \u003ca href=\"#benefits\"\u003eBenefits\u003c\/a\u003e \u003ca href=\"#usage\"\u003eUsage\u003c\/a\u003e \u003ca href=\"#how-it-works\"\u003eHow It Works\u003c\/a\u003e \u003ca href=\"#safety\"\u003eSafety\u003c\/a\u003e \u003ca href=\"#shipping\"\u003eShipping\u003c\/a\u003e \u003ca href=\"#faq\"\u003eFAQ\u003c\/a\u003e \u003ca href=\"#bottom-line\"\u003eBottom Line\u003c\/a\u003e\u003c\/nav\u003e\n\u003cdiv class=\"fph-glance\"\u003e\n\u003cdiv class=\"fph-glance-heading\"\u003eFix Sulfa at a Glance\u003c\/div\u003e\n\u003cdiv class=\"fph-glance-row\"\u003e\n\u003cdiv class=\"fph-glance-label\"\u003eFor\u003c\/div\u003e\n\u003cdiv class=\"fph-glance-value\"\u003eOrnamental aquarium fish in freshwater and saltwater systems\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-glance-row\"\u003e\n\u003cdiv class=\"fph-glance-label\"\u003eHelps with\u003c\/div\u003e\n\u003cdiv class=\"fph-glance-value\"\u003eFin and tail rot, ulcers, columnaris, pop-eye, and other bacterial signs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-glance-row\"\u003e\n\u003cdiv class=\"fph-glance-label\"\u003eForm\u003c\/div\u003e\n\u003cdiv class=\"fph-glance-value\"\u003eScored tablets, 960 mg each\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-glance-row\"\u003e\n\u003cdiv class=\"fph-glance-label\"\u003eCount sizes\u003c\/div\u003e\n\u003cdiv class=\"fph-glance-value\"\u003e30-count and 60-count bottles\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-glance-row\"\u003e\n\u003cdiv class=\"fph-glance-label\"\u003eWater type\u003c\/div\u003e\n\u003cdiv class=\"fph-glance-value\"\u003eFreshwater and saltwater\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-glance-row\"\u003e\n\u003cdiv class=\"fph-glance-label\"\u003eMade in\u003c\/div\u003e\n\u003cdiv class=\"fph-glance-value\"\u003eUnited States by Aqua Soma Labs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"fph-lead\"\u003e\u003cstrong\u003eFish Sulfa (Fix Sulfa) SMZ\/TMP 960 mg\u003c\/strong\u003e is an antibacterial treatment for ornamental aquarium fish.\u003c\/p\u003e\n\u003cp\u003eEach scored tablet combines sulfamethoxazole 800 mg with trimethoprim 160 mg. Aquarium keepers use this dual-ingredient combination to help manage suspected bacterial problems in freshwater and saltwater treatment systems.\u003c\/p\u003e\n\u003cp\u003eIn older aquarium listings and hobby forums, this SMZ\/TMP product may also be called Fish Sulfa, Fish Sulfa Forte, FISHBIOTIC SMZ\/TMP, Aqua Sulfa, or Aqua-SMZ\/TMP.\u003c\/p\u003e\n\u003cp\u003eFix Sulfa is the current-production Aqua Soma Labs replacement for the discontinued Thomas Labs Fish Sulfa Forte.\u003c\/p\u003e\n\u003cp\u003eAquarium keepers commonly use this combination when fish show symptoms associated with fin and tail rot, columnaris or cotton-wool-type patches, skin sores, ulcer-like lesions, bacterial hemorrhagic septicemia, pop-eye, cloudy eyes, and body-slime concerns.\u003c\/p\u003e\n\u003cp\u003eThese signs may involve susceptible bacteria such as Aeromonas, Vibrio, or Streptococcus.\u003c\/p\u003e\n\u003cp\u003eSMZ\/TMP combines two active ingredients that work together to help slow the growth of certain bacteria.\u003c\/p\u003e\n\u003cp\u003eUsed as directed, sulfamethoxazole and trimethoprim work best alongside stable water parameters, strong aeration, clean treatment water, reduced stress, and appropriate aquarium husbandry.\u003c\/p\u003e\n\u003cp\u003eFix Sulfa comes as a consistent 960 mg scored tablet that can be divided, crushed, and dissolved.\u003c\/p\u003e\n\u003cp\u003eIt is available in bottles containing 30 or 60 tablets with clearly printed expiration dates, allowing aquarium keepers to choose a suitable quantity for one quarantine tank or a multi-tank fish room.\u003c\/p\u003e\n\u003cp\u003eBegin treatment at the first signs of bacterial stress and use a hospital or quarantine tank whenever practical.\u003c\/p\u003e\n\u003cdiv class=\"fph-info-box\"\u003e\n\u003ch3\u003eFish Symptoms Aquarists Treat With Fix Sulfa\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFin and tail rot with frayed or deteriorating fins\u003c\/li\u003e\n\u003cli\u003eSkin sores, ulcer-like lesions, and red streaks\u003c\/li\u003e\n\u003cli\u003ePop-eye or bulging eyes\u003c\/li\u003e\n\u003cli\u003eCloudy eyes\u003c\/li\u003e\n\u003cli\u003eColumnaris with a cotton-wool-type appearance\u003c\/li\u003e\n\u003cli\u003eBacterial hemorrhagic septicemia\u003c\/li\u003e\n\u003cli\u003eBody-slime concerns associated with susceptible bacteria\u003c\/li\u003e\n\u003cli\u003eLethargy, rapid breathing, or appetite loss that does not resolve after water-quality correction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-order-note\"\u003e\n\u003cp\u003e\u003cstrong\u003eSame-day dispatch:\u003c\/strong\u003e Qualifying orders placed before 1:30 p.m. CT, Monday through Friday, ship from our United States warehouse through USPS or UPS.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-highlight-note\"\u003e\n\u003cstrong\u003eImportant Notice:\u003c\/strong\u003e This product is intended for aquarium and ornamental fish only. It is not intended for animals raised for food.\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fph-section\" id=\"fish-sulfa-vs-fix-sulfa\"\u003e\n\u003ch2 class=\"fph-section-title\"\u003eFish Sulfa Forte vs Fix Sulfa: What Changed?\u003c\/h2\u003e\n\u003cp\u003eIf you previously purchased Thomas Labs Fish Sulfa Forte, FISHBIOTIC SMZ\/TMP, Aqua Sulfa, or Aqua-SMZ\/TMP, here is what has changed and what remains the same.\u003c\/p\u003e\n\u003cdiv class=\"fph-comparison-grid\"\u003e\n\u003cdiv class=\"fph-comparison-card\"\u003e\n\u003cspan class=\"fph-small-label\"\u003eActive ingredients\u003c\/span\u003e\n\u003ch3\u003eSame SMZ\/TMP Combination\u003c\/h3\u003e\n\u003cp\u003eFix Sulfa contains sulfamethoxazole 800 mg and trimethoprim 160 mg per tablet, providing a combined strength of 960 mg.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-comparison-card\"\u003e\n\u003cspan class=\"fph-small-label\"\u003eBranding\u003c\/span\u003e\n\u003ch3\u003eUpdated Fix Branding\u003c\/h3\u003e\n\u003cp\u003eAqua Soma Labs produces Fix Sulfa as the current replacement for discontinued Fish Sulfa Forte and other older aquarium SMZ\/TMP products.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-comparison-card\"\u003e\n\u003cspan class=\"fph-small-label\"\u003eTablet format\u003c\/span\u003e\n\u003ch3\u003eSame Scored Tablet Form\u003c\/h3\u003e\n\u003cp\u003eEach tablet provides a consistent 960 mg total strength and can be divided, crushed, and dissolved according to the aquarium-water volume.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-comparison-card\"\u003e\n\u003cspan class=\"fph-small-label\"\u003eBottle options\u003c\/span\u003e\n\u003ch3\u003eFlexible Bottle Sizes\u003c\/h3\u003e\n\u003cp\u003eChoose between 30-count and 60-count bottles for short treatment plans, quarantine systems, or larger multi-tank setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fph-section\" id=\"benefits\"\u003e\n\u003ch2 class=\"fph-section-title\"\u003eBenefits of Fix Sulfa for Fish\u003c\/h2\u003e\n\u003cdiv class=\"fph-benefits-grid\"\u003e\n\u003cdiv class=\"fph-benefit-card\"\u003e\n\u003cdiv class=\"fph-benefit-number\"\u003e01\u003c\/div\u003e\n\u003ch3\u003eDual-Action SMZ\/TMP Combination\u003c\/h3\u003e\n\u003cp\u003eFix Sulfa pairs sulfamethoxazole and trimethoprim, a combination aquarium keepers use to help manage certain bacterial concerns in ornamental fish.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-benefit-card\"\u003e\n\u003cdiv class=\"fph-benefit-number\"\u003e02\u003c\/div\u003e\n\u003ch3\u003eMade in the United States\u003c\/h3\u003e\n\u003cp\u003eFix Sulfa is manufactured in the United States by Aqua Soma Labs as the current-production replacement for discontinued Fish Sulfa Forte products.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-benefit-card\"\u003e\n\u003cdiv class=\"fph-benefit-number\"\u003e03\u003c\/div\u003e\n\u003ch3\u003eSupport for Common Aquarium Problems\u003c\/h3\u003e\n\u003cp\u003eAquarium keepers may choose Fish Sulfa tablets for fin and tail rot, columnaris-type patches, cotton-wool-type signs, ulcers, pop-eye, cloudy eyes, and persistent bacterial symptoms.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-benefit-card\"\u003e\n\u003cdiv class=\"fph-benefit-number\"\u003e04\u003c\/div\u003e\n\u003ch3\u003eExternal and Internal Bacterial Signs\u003c\/h3\u003e\n\u003cp\u003eSMZ\/TMP may be used in a hospital tank for visible sores and fin damage or when lethargy and appetite loss occur together with suspected bacterial stress.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-benefit-card\"\u003e\n\u003cdiv class=\"fph-benefit-number\"\u003e05\u003c\/div\u003e\n\u003ch3\u003eConsistent 960 mg Tablet Strength\u003c\/h3\u003e\n\u003cp\u003eEach scored tablet provides a predictable amount of sulfamethoxazole and trimethoprim, helping aquarium keepers plan repeatable amounts for different water volumes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-benefit-card\"\u003e\n\u003cdiv class=\"fph-benefit-number\"\u003e06\u003c\/div\u003e\n\u003ch3\u003eIntended for Ornamental Fish\u003c\/h3\u003e\n\u003cp\u003eFix Sulfa is formulated and labeled for ornamental aquarium fish and provides a countable tablet format for treatment-tank use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-benefit-card\"\u003e\n\u003cdiv class=\"fph-benefit-number\"\u003e07\u003c\/div\u003e\n\u003ch3\u003eHelpful for Hospital Tanks\u003c\/h3\u003e\n\u003cp\u003eA separate hospital or quarantine tank allows closer observation, more accurate treatment, and reduced exposure of healthy tank mates.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fph-section\" id=\"usage\"\u003e\n\u003ch2 class=\"fph-section-title\"\u003eUsage Guidelines \u0026amp; Instructions\u003c\/h2\u003e\n\u003cp\u003eThese steps follow the supplied Fix Sulfa 960 bottle-label directions for SMZ\/TMP use in ornamental aquarium fish.\u003c\/p\u003e\n\u003cdiv class=\"fph-summary-box\"\u003e\n\u003ch3\u003eQuick Usage Summary\u003c\/h3\u003e\n\u003cp\u003eDissolve one tablet and add it for every 40 gallons or approximately 151 litres of treatment water.\u003c\/p\u003e\n\u003cp\u003eRepeat every 24 hours with a partial water change between treatments for 5 to 10 days.\u003c\/p\u003e\n\u003cp\u003eDiscontinue use if no improvement is noted after five days.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"fph-subtitle\"\u003eBefore You Dose\u003c\/h3\u003e\n\u003cdiv class=\"fph-steps\"\u003e\n\u003cdiv class=\"fph-step\"\u003e\n\u003cdiv class=\"fph-step-number\"\u003e1\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eMeasure the Actual Water Volume\u003c\/h3\u003e\n\u003cp\u003eCalculate the real volume of water being treated rather than relying only on the aquarium's advertised capacity.\u003c\/p\u003e\n\u003cp\u003eAccount for substrate, rocks, decorations, equipment, and the actual fill level.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-step\"\u003e\n\u003cdiv class=\"fph-step-number\"\u003e2\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eUse a Hospital or Quarantine Tank\u003c\/h3\u003e\n\u003cp\u003eTreat affected fish in a separate system whenever practical for better control and closer observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-step\"\u003e\n\u003cdiv class=\"fph-step-number\"\u003e3\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eRemove Carbon and Turn Off UV\u003c\/h3\u003e\n\u003cp\u003eRemove activated carbon and other chemical filtration media before treatment.\u003c\/p\u003e\n\u003cp\u003eSwitch off ultraviolet sterilization because these systems may reduce treatment availability in the water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-step\"\u003e\n\u003cdiv class=\"fph-step-number\"\u003e4\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eIncrease Aeration\u003c\/h3\u003e\n\u003cp\u003eIncrease surface agitation and aeration while keeping the treatment-tank temperature stable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"fph-subtitle\"\u003eDirections for Use\u003c\/h3\u003e\n\u003cdiv class=\"fph-steps\"\u003e\n\u003cdiv class=\"fph-step\"\u003e\n\u003cdiv class=\"fph-step-number\"\u003e1\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eDissolve and Add the Treatment\u003c\/h3\u003e\n\u003cp\u003eFully dissolve one tablet in a small cup of aquarium water.\u003c\/p\u003e\n\u003cp\u003eAdd the dissolved mixture evenly throughout the treatment tank at a rate of one tablet per 40 gallons or approximately 151 litres.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-step\"\u003e\n\u003cdiv class=\"fph-step-number\"\u003e2\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eRepeat Every 24 Hours\u003c\/h3\u003e\n\u003cp\u003eRepeat treatment once every 24 hours.\u003c\/p\u003e\n\u003cp\u003ePerform a partial water change between treatments to maintain suitable water quality.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-step\"\u003e\n\u003cdiv class=\"fph-step-number\"\u003e3\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eComplete Treatment and Monitor Progress\u003c\/h3\u003e\n\u003cp\u003eContinue treatment for 5 to 10 days according to the current bottle label.\u003c\/p\u003e\n\u003cp\u003eMonitor appetite, swimming behavior, breathing, fin condition, sores, and signs of stress.\u003c\/p\u003e\n\u003cp\u003eDiscontinue use if no improvement is noted after five days.\u003c\/p\u003e\n\u003cp\u003eIf fish appear worse or develop severe stress, stop treatment and seek aquatic veterinary advice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-step\"\u003e\n\u003cdiv class=\"fph-step-number\"\u003e4\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003ePost-Treatment Cleanup\u003c\/h3\u003e\n\u003cp\u003eAfter treatment is complete, perform a partial water change and resume normal filtration.\u003c\/p\u003e\n\u003cp\u003eReplace activated carbon or other chemical media if they were removed.\u003c\/p\u003e\n\u003cp\u003eContinue monitoring ammonia, nitrite, temperature, and fish behavior for several days.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"fph-subtitle\"\u003eFix Sulfa Amounts by Aquarium Size\u003c\/h3\u003e\n\u003cdiv class=\"fph-table-wrapper\"\u003e\n\u003ctable class=\"fph-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eTank volume\u003c\/th\u003e\n\u003cth\u003eFix Sulfa 960 amount\u003c\/th\u003e\n\u003cth\u003eHow to measure\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e10 gallons (38 L)\u003c\/td\u003e\n\u003ctd\u003e¼ tablet\u003c\/td\u003e\n\u003ctd\u003eDivide the scored tablet or add one-quarter of a fully dissolved tablet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20 gallons (76 L)\u003c\/td\u003e\n\u003ctd\u003e½ tablet\u003c\/td\u003e\n\u003ctd\u003eDivide the scored tablet or add one-half of a fully dissolved tablet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40 gallons (151 L)\u003c\/td\u003e\n\u003ctd\u003e1 tablet\u003c\/td\u003e\n\u003ctd\u003eDissolve one complete tablet according to the label standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80 gallons (303 L)\u003c\/td\u003e\n\u003ctd\u003e2 tablets\u003c\/td\u003e\n\u003ctd\u003eDissolve two complete tablets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e120 gallons (454 L)\u003c\/td\u003e\n\u003ctd\u003e3 tablets\u003c\/td\u003e\n\u003ctd\u003eDissolve three complete tablets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-highlight-note\"\u003eThe supplied Fix Sulfa 960 label states one tablet per 40 gallons or approximately 151 litres, which equals about 24 mg of combined sulfamethoxazole and trimethoprim per gallon. The 40-gallon row is the exact label instruction, while the other rows scale that same rate. Dose according to actual treatment-water volume, not the number of fish. The current bottle label or an aquatic veterinarian's directions take priority over this quick-reference chart.\u003c\/div\u003e\n\u003ch3 class=\"fph-subtitle\"\u003eWhat to Expect During Treatment\u003c\/h3\u003e\n\u003cdiv class=\"fph-timeline\"\u003e\n\u003cdiv class=\"fph-timeline-card\"\u003e\n\u003ch3\u003eDays 1 to 2\u003c\/h3\u003e\n\u003cp\u003eFish may hide, eat less, or produce slightly cloudy treatment water. Maintain the treatment schedule and keep aeration strong.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-timeline-card\"\u003e\n\u003ch3\u003eDays 3 to 5\u003c\/h3\u003e\n\u003cp\u003eLook for sores and red patches that stop spreading, returning appetite, improved activity, and steadier breathing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-timeline-card\"\u003e\n\u003ch3\u003eDays 5 to 10\u003c\/h3\u003e\n\u003cp\u003eComplete the recommended treatment period. After treatment, perform a partial water change and restore activated carbon if normally used.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-highlight-note\"\u003eIf no improvement is seen by day five, or if symptoms become worse, discontinue treatment and seek aquatic veterinary guidance.\u003c\/div\u003e\n\u003ch3 class=\"fph-subtitle\"\u003eWhat You Need for Treatment\u003c\/h3\u003e\n\u003cdiv class=\"fph-info-box\"\u003e\n\u003cul\u003e\n\u003cli\u003eA separate hospital or quarantine tank\u003c\/li\u003e\n\u003cli\u003eA suitable aquarium heater\u003c\/li\u003e\n\u003cli\u003eAn air stone or established sponge filter\u003c\/li\u003e\n\u003cli\u003eAn ammonia and nitrite test kit\u003c\/li\u003e\n\u003cli\u003eA suitable water conditioner or dechlorinator\u003c\/li\u003e\n\u003cli\u003eA small net for gentle transfer\u003c\/li\u003e\n\u003cli\u003eA clean cup for dissolving and measuring the treatment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-pro-tip\"\u003e\n\u003cp\u003e\u003cstrong\u003ePro Tip:\u003c\/strong\u003e Hospital-tank treatment helps protect the display aquarium, keeps the amount consistent, and makes it easier to maintain ammonia and nitrite at safe levels during recovery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fph-section\" id=\"how-it-works\"\u003e\n\u003ch2 class=\"fph-section-title\"\u003eHow Fix Sulfa Works\u003c\/h2\u003e\n\u003cp class=\"fph-lead\"\u003eEach Fix Sulfa tablet combines sulfamethoxazole 800 mg with trimethoprim 160 mg, providing a total SMZ\/TMP strength of 960 mg.\u003c\/p\u003e\n\u003cp\u003eWhen dissolved and added to aquarium water according to the label, the two active ingredients work together to help slow the growth of certain susceptible bacteria.\u003c\/p\u003e\n\u003cp\u003eThis combination is commonly used by aquarium keepers for suspected bacterial concerns involving fins, skin, sores, ulcers, eyes, and systemic signs in ornamental freshwater and saltwater fish.\u003c\/p\u003e\n\u003cp\u003eEach tablet also contains standard inactive ingredients that help hold the tablet together, support storage stability, and allow the contents to disperse when dissolved in water.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"fph-section\" id=\"safety\"\u003e\n\u003ch2 class=\"fph-section-title\"\u003eSafety and Tank Notes\u003c\/h2\u003e\n\u003cp\u003eIndividual fish may respond differently to treatment. Follow the current label and monitor fish and water quality closely throughout the treatment period.\u003c\/p\u003e\n\u003cdiv class=\"fph-safety-grid\"\u003e\n\u003cdiv class=\"fph-safety-card\"\u003e\n\u003ch3\u003ePossible Side Effects in Fish\u003c\/h3\u003e\n\u003cp\u003ePossible temporary reactions include reduced appetite, mild lethargy, hiding behavior, and occasional water cloudiness.\u003c\/p\u003e\n\u003cp\u003eIf fish develop rapid gill movement, surface gasping, loss of balance, or remain on the bottom, stop treatment, increase aeration, and seek aquatic veterinary advice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-safety-card\"\u003e\n\u003ch3\u003eStop Treatment If\u003c\/h3\u003e\n\u003cp\u003eStop treatment when fish show severe stress, worsening symptoms, rapid gill movement, surface gasping, loss of balance, or a serious decline in activity.\u003c\/p\u003e\n\u003cp\u003eIncrease aeration immediately and consult an aquatic veterinarian if the signs do not stabilize.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-safety-card\"\u003e\n\u003ch3\u003eWater Quality and Biofilter Awareness\u003c\/h3\u003e\n\u003cp\u003eKeep aeration strong and monitor ammonia and nitrite closely.\u003c\/p\u003e\n\u003cp\u003ePerform partial water changes when necessary to keep the treatment system stable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-safety-card\"\u003e\n\u003ch3\u003eFiltration During Treatment\u003c\/h3\u003e\n\u003cp\u003eRemove activated carbon and other chemical filtration media before treatment.\u003c\/p\u003e\n\u003cp\u003eSwitch off ultraviolet sterilization and resume normal filtration only after treatment is complete.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-safety-card\"\u003e\n\u003ch3\u003eInvertebrates and Display Tanks\u003c\/h3\u003e\n\u003cp\u003eIf the aquarium contains shrimp, snails, corals, or other sensitive invertebrates, treat affected fish in a separate hospital tank whenever practical.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-safety-card\"\u003e\n\u003ch3\u003eDo Not Mix Treatments\u003c\/h3\u003e\n\u003cp\u003eAvoid combining Fix Sulfa with other aquarium treatments unless the product label explicitly allows it or an aquatic veterinarian recommends it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-warning\"\u003e\n\u003ch3\u003eImportant Warnings \u0026amp; Precautions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAquarium use only:\u003c\/strong\u003e Fix Sulfa is intended for ornamental aquarium fish only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot for food fish:\u003c\/strong\u003e Do not use this product on fish raised for human consumption.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHandling:\u003c\/strong\u003e Avoid contact with the dissolved treatment. Wash your hands after handling and use suitable gloves when needed. Keep the tablet contents and dissolved product away from the skin and eyes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStorage:\u003c\/strong\u003e Keep the container tightly closed in a cool, dry location protected from direct sunlight and moisture.\u003c\/p\u003e\n\u003cp\u003eKeep out of reach of children and animals. Check the expiration date and do not use expired tablets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDiscontinue if no improvement:\u003c\/strong\u003e If no improvement is noted after five days, stop treatment and re-evaluate the diagnosis or seek aquatic veterinary advice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fph-section\" id=\"shipping\"\u003e\n\u003ch2 class=\"fph-section-title\"\u003eShipping \u0026amp; Returns\u003c\/h2\u003e\n\u003cdiv class=\"fph-policy-grid\"\u003e\n\u003cdiv class=\"fph-policy-card\"\u003e\n\u003ch3\u003eShipping Policy\u003c\/h3\u003e\n\u003cp\u003eOrders ship from our United States warehouse within one business day through USPS or UPS.\u003c\/p\u003e\n\u003cp\u003eQualifying orders placed before 1:30 p.m. CT, Monday through Friday, may ship the same business day.\u003c\/p\u003e\n\u003cp\u003eShipping rates and estimated delivery times are calculated at checkout.\u003c\/p\u003e\n\u003ca href=\"http:\/\/www.calvetsupply.com\/pages\/shipping-policy\"\u003eReview Shipping Policy → \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-policy-card\"\u003e\n\u003ch3\u003eRefund Policy\u003c\/h3\u003e\n\u003cp\u003eIf there is an issue with your order, eligible products may be returned or exchanged within 30 days according to the current store guidelines.\u003c\/p\u003e\n\u003cp\u003eReview the complete refund policy before returning any product.\u003c\/p\u003e\n\u003ca href=\"http:\/\/www.calvetsupply.com\/pages\/refund-policy\"\u003eReview Refund Policy → \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fph-section\" id=\"faq\"\u003e\n\u003ch2 class=\"fph-section-title\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"fph-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is Fix Sulfa used for?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Sulfa is an SMZ\/TMP antibacterial treatment for certain suspected bacterial problems in ornamental aquarium fish, including fin and tail rot, ulcers, columnaris-type signs, pop-eye, cloudy eyes, red streaking, and systemic bacterial stress.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is Fish Sulfa Forte?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFish Sulfa Forte was an aquarium SMZ\/TMP product containing sulfamethoxazole and trimethoprim. Fix Sulfa is the current Aqua Soma Labs replacement in the same combined 960 mg strength.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between Fish Sulfa Forte and Fix Sulfa?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Sulfa uses the same combination of sulfamethoxazole 800 mg and trimethoprim 160 mg associated with older Fish Sulfa Forte products. The main changes are the manufacturer, branding, packaging, and current production.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs Fix Sulfa a replacement for Aqua-SMZ\/TMP?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Sulfa is presented as the current Aqua Soma Labs replacement for older Aqua Sulfa and Aqua-SMZ\/TMP aquarium products.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhere can I buy SMZ\/TMP fish tablets online?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Sulfa 960 mg tablets can be ordered through this online store in 30-count or 60-count bottles and shipped according to the current store shipping policy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the active ingredients in each tablet?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eEach scored tablet contains sulfamethoxazole 800 mg and trimethoprim 160 mg, providing a combined strength of 960 mg.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the Fix Sulfa amount for fish?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eThe supplied label direction is one 960 mg tablet per 40 gallons or approximately 151 litres of treatment water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow much Fix Sulfa should I use per gallon?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eOne tablet per 40 gallons equals approximately 24 mg of combined sulfamethoxazole and trimethoprim per gallon. Follow the current bottle label rather than relying only on a calculated per-gallon amount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow long should I treat with Fix Sulfa?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eThe supplied instructions describe treatment every 24 hours for 5 to 10 days, with a partial water change between treatments.\u003c\/p\u003e\n\u003cp\u003eDiscontinue treatment if no improvement is noted after five days.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow soon should I see improvement?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eImprovement may appear within three to five days through sores that stop spreading, improved appetite, steadier breathing, and increased activity.\u003c\/p\u003e\n\u003cp\u003eStop treatment and seek professional guidance if fish worsen or no improvement appears by day five.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShould I treat in the main tank or a hospital tank?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eA separate hospital or quarantine tank is preferred. This provides better treatment control, protects healthy tank mates, and reduces disturbance to the display aquarium.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003eDo I need to remove carbon or turn off UV?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eRemove activated carbon and other chemical filtration media and switch off ultraviolet sterilization during treatment because these systems may reduce treatment availability in the water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill Fix Sulfa harm beneficial aquarium bacteria?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eAntibacterial treatment may disturb biological filtration. Use a separate treatment system when possible and monitor ammonia and nitrite closely.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan Fix Sulfa treat fungal, viral, or parasitic infections?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Sulfa is an antibacterial treatment. It should not be expected to treat fungal, viral, or parasitic conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs Fix Sulfa safe for betta fish and small aquariums?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eSmall treatment tanks require careful measurement. Because each tablet is scored, it may be divided, or a complete tablet may be dissolved in a measured amount of water and the correct fraction added. Always follow the current bottle label.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes Fix Sulfa work in saltwater aquariums?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Sulfa is presented for ornamental fish in freshwater and saltwater treatment systems. Use a separate hospital tank when the display aquarium contains corals or sensitive invertebrates.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I combine Fix Sulfa with other fish treatments?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eDo not combine Fix Sulfa with other treatments unless the label specifically permits the combination or an aquatic veterinarian recommends it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat if my fish are not improving?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eDiscontinue treatment if no improvement is noted after five days. Re-evaluate the water quality and diagnosis and seek aquatic veterinary advice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat should I do after finishing treatment?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003ePerform a partial water change, resume normal filtration, restore activated carbon or chemical media, and continue monitoring ammonia, nitrite, and fish behavior for several days.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow should I store and dispose of Fix Sulfa tablets?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eStore tablets tightly closed in the original container in a cool, dry location protected from sunlight and moisture.\u003c\/p\u003e\n\u003cp\u003eFollow the product label and applicable local requirements when disposing of unused tablets, treatment water, or filter media. Avoid releasing concentrated treatment into natural waterways.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fph-section\" id=\"bottom-line\"\u003e\n\u003cdiv class=\"fph-bottom-line\"\u003e\n\u003ch2\u003eBottom Line\u003c\/h2\u003e\n\u003cp\u003eFix Sulfa is an SMZ\/TMP 960 mg antibacterial treatment containing sulfamethoxazole 800 mg and trimethoprim 160 mg for bacterial concerns in ornamental aquarium fish.\u003c\/p\u003e\n\u003cp\u003eIt is the current-production replacement for discontinued Thomas Labs Fish Sulfa Forte.\u003c\/p\u003e\n\u003cp\u003eDose according to water volume at one tablet per 40 gallons or approximately 151 litres, repeat every 24 hours with a partial water change between treatments, and continue for 5 to 10 days according to the current bottle label.\u003c\/p\u003e\n\u003cp\u003eReassess treatment at day five and discontinue use if no improvement is noted.\u003c\/p\u003e\n\u003cp\u003eFix Sulfa does not treat fungal, viral, or parasitic conditions and is intended only for ornamental aquarium fish, not animals raised for food.\u003c\/p\u003e\n\u003cp\u003eChoose the bottle size that fits your aquarium setup, or compare the additional Fix line products below.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fph-section\"\u003e\n\u003ch2 class=\"fph-section-title\"\u003eMore Fish \u0026amp; Bird Treatments\u003c\/h2\u003e\n\u003cdiv class=\"fph-related-grid\"\u003e\n\u003cdiv class=\"fph-related-card\"\u003e\n\u003ch3\u003eFix Mox (Amoxicillin) 250\/500 mg\u003c\/h3\u003e\n\u003cp\u003eA treatment for fin rot, dropsy, ulcers, and other bacterial concerns in ornamental fish. Available in 30-count and 100-count capsules.\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.calvetsupply.com\/products\/fish-mox\"\u003eShop Fix Mox → \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-related-card\"\u003e\n\u003ch3\u003eFix Zole (Metronidazole) 250\/500 mg\u003c\/h3\u003e\n\u003cp\u003eTargets certain anaerobic organisms and protozoa associated with Hexamita and hole-in-the-head concerns. Available in 60-count bottles.\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.calvetsupply.com\/products\/fish-zole\"\u003eShop Fix Zole → \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-related-card\"\u003e\n\u003ch3\u003eFix Doxy (Doxycycline) 100 mg\u003c\/h3\u003e\n\u003cp\u003eA treatment for columnaris, respiratory concerns, and Mycoplasma-related problems in ornamental fish and non-food pet birds.\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.calvetsupply.com\/products\/fish-doxy\"\u003eShop Fix Doxy → \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-related-card\"\u003e\n\u003ch3\u003eFix Zithro (Azithromycin) 250 mg\u003c\/h3\u003e\n\u003cp\u003eA treatment for fin rot, columnaris, gill disease, and veterinarian-directed avian respiratory concerns.\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.calvetsupply.com\/products\/fish-zithro\"\u003eShop Fix Zithro → \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-related-card\"\u003e\n\u003ch3\u003eFix Cin (Clindamycin) 150 mg\u003c\/h3\u003e\n\u003cp\u003eA treatment for bacterial skin and soft-tissue concerns in ornamental fish.\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.calvetsupply.com\/products\/fish-cin\"\u003eShop Fix Cin → \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-related-card\"\u003e\n\u003ch3\u003eFix Pen (Penicillin) 500 mg\u003c\/h3\u003e\n\u003cp\u003eA penicillin treatment for bacterial concerns in ornamental fish and non-food pet birds.\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.calvetsupply.com\/products\/fish-pen\"\u003eShop Fix Pen → \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-related-card\"\u003e\n\u003ch3\u003eFix Flex (Cephalexin) 250\/500 mg\u003c\/h3\u003e\n\u003cp\u003eA treatment for fin rot, ulcers, infected wounds, and bacterial skin concerns in ornamental fish and non-food pet birds.\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.calvetsupply.com\/products\/fish-flex\"\u003eShop Fix Flex → \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-related-card\"\u003e\n\u003ch3\u003eFix Flox (Ciprofloxacin) 500 mg\u003c\/h3\u003e\n\u003cp\u003eA treatment for bacterial concerns including fin rot, ulcers, columnaris-type patches, and septicemia in ornamental fish.\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.calvetsupply.com\/products\/fish-flox\"\u003eShop Fix Flox → \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-browse-grid\"\u003e\n\u003cdiv class=\"fph-browse-card\"\u003e\n\u003ch3\u003eBrowse All Treatments\u003c\/h3\u003e\n\u003cp\u003eExplore the complete Fish \u0026amp; Bird Treatments Collection for additional Fix line products and related treatment options.\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.calvetsupply.com\/collections\/fish-antibiotics\"\u003eExplore the Collection → \u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-browse-card\"\u003e\n\u003ch3\u003eGuides and Care Tips\u003c\/h3\u003e\n\u003cp\u003eVisit the Fish \u0026amp; Bird Care Blog for practical aquarium guides, water-care information, and treatment tips.\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.calvetsupply.com\/blogs\/fish-antibiotics\"\u003eVisit the Blog → \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-image-note\"\u003eTap the product image above to expand and zoom 🔍\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fph-section\"\u003e\n\u003cdiv class=\"fph-verification\"\u003e\n\u003cdiv class=\"fph-verification-header\"\u003e\n\u003ch2\u003eTransparency \u0026amp; Verification\u003c\/h2\u003e\n\u003cp\u003eHow Product Information Is Verified\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-verification-body\"\u003e\n\u003cp\u003e\u003cstrong\u003eWho is responsible for this page:\u003c\/strong\u003e The store editorial team responsible for reviewing and maintaining product information.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVerification snapshot:\u003c\/strong\u003e This page is written from the current product label for this item and reviewed for accuracy and consistency before publishing.\u003c\/p\u003e\n\u003ch3 class=\"fph-subtitle\"\u003eHow We Verify Product Information\u003c\/h3\u003e\n\u003cdiv class=\"fph-verification-grid\"\u003e\n\u003cdiv class=\"fph-verification-card\"\u003e\n\u003ch3\u003eLabel-First Accuracy\u003c\/h3\u003e\n\u003cp\u003eDirections, treatment duration, storage information, and warnings are taken from the current product label.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-verification-card\"\u003e\n\u003ch3\u003eSpecification Validation\u003c\/h3\u003e\n\u003cp\u003eActive ingredients, tablet strengths, bottle counts, and manufacturer details are cross-checked against available product specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-verification-card\"\u003e\n\u003ch3\u003eConsistency Checks\u003c\/h3\u003e\n\u003cp\u003eProduct content is reviewed for consistent directions, strengths, storage information, and safety language throughout the page.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-verification-card\"\u003e\n\u003ch3\u003eUpdates\u003c\/h3\u003e\n\u003cp\u003ePages are updated when product labels, packaging, bottle counts, manufacturer details, or directions change.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-highlight-note\"\u003e\n\u003cstrong\u003eWhat we do not do:\u003c\/strong\u003e We do not invent product claims, and we do not add usage directions beyond what the current product label states for its intended use.\u003c\/div\u003e\n\u003cp style=\"margin-top: 25px;\"\u003eSee something that does not match the product you received? Please \u003cstrong\u003e\u003cspan style=\"color: rgb(255, 128, 0);\"\u003e\u003ca href=\"%20https:\/\/www.calvetsupply.com\/pages\/contact-us\" style=\"color: rgb(255, 128, 0);\"\u003econtact us\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e so the information can be reviewed and updated.\u003c\/p\u003e\n\u003cdiv class=\"fph-educational-note\"\u003e\n\u003cstrong\u003eEducational use:\u003c\/strong\u003e This content is provided for general informational purposes only and is not a substitute for advice from a qualified veterinarian.\u003c\/div\u003e\n\u003cdiv class=\"fph-reviewed\"\u003eLast reviewed: July 10, 2026\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Aqua Soma Labs","offers":[{"title":"960-mg (30 Count)","offer_id":45972965949474,"sku":"405308","price":29.99,"currency_code":"USD","in_stock":true},{"title":"960-mg (60 Count)","offer_id":45972965982242,"sku":"322493","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0891\/7008\/3874\/files\/FishSulfa.png?v=1783911442","url":"https:\/\/calvetsupply.com\/products\/fish-sulfa","provider":"Calvetsupply","version":"1.0","type":"link"}