{"title":"Fish Zithro","description":"\u003cdiv class=\"collection-description\"\u003e\n\u003ch1 class=\"page_heading\"\u003eFish Zithro — Azithromycin for Aquarium \u0026amp; Ornamental Fish\u003c\/h1\u003e\n\u003cp\u003eCalVetSupply's Fish Zithro contains Azithromycin — a macrolide antibiotic highly effective against external and respiratory bacterial infections in ornamental and aquarium fish. Available in 250mg capsules, Fish Zithro is a trusted choice for fish keepers dealing with columnaris, bacterial gill disease, and persistent external bacterial conditions that are difficult to treat with standard penicillin-class antibiotics.\u003c\/p\u003e\n\u003cp\u003eFish Zithro is commonly used to treat columnaris (Flavobacterium columnare), bacterial gill disease, fin and tail rot, external bacterial infections, and cotton wool disease in freshwater and saltwater ornamental fish. Its macrolide-class action targets bacteria that other antibiotics may miss, making it a valuable option when first-line treatments haven't delivered results.\u003c\/p\u003e\n\u003cp\u003eFish Zithro works differently from penicillin and cephalosporin antibiotics — rather than destroying bacterial cell walls, Azithromycin inhibits bacterial protein synthesis, stopping the infection from spreading. This makes Fish Zithro particularly effective against columnaris and gill-related bacterial conditions that are common in stressed or newly introduced aquarium fish. All Fish Zithro products at CalVetSupply are for ornamental aquarium fish use only and available without a vet prescription.\u003c\/p\u003e\n\u003ch2\u003eWhat Is Fish Zithro?\u003c\/h2\u003e\n\u003cp\u003eFish Zithro contains Azithromycin, a macrolide-class antibiotic that works by inhibiting bacterial protein synthesis — preventing harmful bacteria from reproducing and spreading in your aquarium. Manufactured by Thomas Labs, Fish Zithro 250mg is one of the most effective fish antibiotics for columnaris and external bacterial conditions that don't respond to penicillin or cephalosporin treatments.\u003c\/p\u003e\n\u003ch2\u003eWhat Does Fish Zithro Treat?\u003c\/h2\u003e\n\u003cp\u003eFish Zithro is effective against columnaris (Flavobacterium columnare), bacterial gill disease, fin rot, tail rot, cotton wool disease, and external bacterial infections in ornamental freshwater and saltwater fish. It is particularly valuable for treating columnaris — one of the most aggressive and fast-spreading bacterial diseases in aquarium fish — where rapid treatment is critical to preventing loss.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose Fish Zithro Over Other Fish Antibiotics?\u003c\/h2\u003e\n\u003cp\u003eFish Zithro's Azithromycin targets a different bacterial pathway than Fish Mox (Amoxicillin) or Fish Flex (Cephalexin). If your fish has not responded to a penicillin or cephalosporin antibiotic, Fish Zithro is an important alternative. It is especially recommended when columnaris or gill disease is suspected, as these conditions are caused by gram-negative bacteria that respond well to macrolide treatment.\u003c\/p\u003e\n\u003ch2\u003eHow to Use Fish Zithro for Aquarium Fish\u003c\/h2\u003e\n\u003cp\u003eRemove activated carbon from your filter before starting treatment — carbon absorbs medication and prevents it from working. Follow the dosage instructions on the product label carefully. Quarantine sick fish in a hospital tank when possible to protect your main tank's biological filtration and prevent the spread of columnaris or other fast-moving bacterial infections to healthy fish. Complete the full treatment course even if symptoms improve early.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy Fish Zithro at CalVetSupply?\u003c\/h2\u003e\n\u003cp\u003eCalVetSupply offers Fish Zithro 250mg at competitive prices with fast U.S. shipping and no vet prescription required for ornamental fish use. We stock genuine Thomas Labs products with clear ingredient and dosage information so you can identify the right antibiotic and begin treatment without delay.\u003c\/p\u003e\n\u003ch2\u003eFAQ SECTION\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is Fish Zithro used for?\u003c\/strong\u003e A: Fish Zithro (Azithromycin) is used to treat columnaris, bacterial gill disease, fin and tail rot, cotton wool disease, and external bacterial infections in ornamental aquarium fish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need a prescription to buy Fish Zithro?\u003c\/strong\u003e A: No. Fish Zithro is available at CalVetSupply without a vet prescription. It is intended for ornamental aquarium fish use only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What makes Fish Zithro different from Fish Mox or Fish Flex?\u003c\/strong\u003e A: Fish Zithro contains Azithromycin, a macrolide antibiotic that inhibits bacterial protein synthesis. Fish Mox (Amoxicillin) and Fish Flex (Cephalexin) work by disrupting bacterial cell walls. Fish Zithro is the better choice for columnaris and gill disease caused by gram-negative bacteria.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How long does Fish Zithro treatment take?\u003c\/strong\u003e A: Most Fish Zithro treatment courses run 7–10 days. Always complete the full course even if your fish shows early signs of recovery to prevent antibiotic resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can Fish Zithro be used in saltwater tanks?\u003c\/strong\u003e A: Fish Zithro can be used in both freshwater and saltwater aquariums. Always follow label directions for correct dosage and treatment duration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will Fish Zithro harm my tank's beneficial bacteria?\u003c\/strong\u003e A: Fish Zithro may affect biological filtration in your tank. Treating sick fish in a separate hospital tank when possible helps minimize disruption to your main aquarium.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"fish-zithro","title":"Fish Zithro (Fix Zithro) Azithromycin 250mg 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  }\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  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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\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 Zithro (Fix Zithro) Azithromycin Tablets - 250 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=\"#bird-zithro-vs-fix-zithro\"\u003eBird Zithro vs Fix Zithro\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\u003c\/nav\u003e\n\u003cdiv class=\"fph-glance\"\u003e\n\u003cdiv class=\"fph-glance-heading\"\u003eFix Zithro 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 \u0026amp; non-food pet birds\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, columnaris, gill disease, and early respiratory signs in birds\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\"\u003eCrushable tablets, 250 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\"\u003e12-count and 30-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 Zithro (Fix Zithro)\u003c\/strong\u003e supplies 250 mg of azithromycin per tablet and is an antibacterial treatment for ornamental aquarium fish and non-food pet birds.\u003c\/p\u003e\n\u003cp\u003eIt is often selected to help manage suspected bacterial problems such as fin and tail rot, columnaris, gill disease, and early respiratory signs in pet birds.\u003c\/p\u003e\n\u003cp\u003eOften called Bird Zithro or Fish Zithro in the hobby community, Fix Zithro is a replacement for the discontinued Thomas Labs Bird Zithro, Fish Zithro, and Aqua Zithro 250 mg products.\u003c\/p\u003e\n\u003cp\u003eThis azithromycin tablet from the Aqua Soma Labs Fix range is used for common problems such as fin and tail rot, columnaris, gill disease, bacterial hemorrhagic septicemia, and other bacterial infections in freshwater and saltwater aquariums.\u003c\/p\u003e\n\u003cp\u003eBird keepers may also use it under veterinary guidance for mild upper respiratory tract infections, suspected Mycoplasma concerns, or conditions associated with Chlamydia psittaci, including psittacosis, parrot fever, and ornithosis in pigeons and other pet birds.\u003c\/p\u003e\n\u003cp\u003eAzithromycin helps slow or stop the growth of certain bacteria affecting the gills, skin, and respiratory tract.\u003c\/p\u003e\n\u003cp\u003eWhen used as directed, it works best alongside appropriate husbandry, clean water, stable environmental conditions, and suitable nutrition.\u003c\/p\u003e\n\u003cp\u003eFix Zithro from Aqua Soma Labs is available in bottles of 12 or 30 tablets with fresh expiration dates.\u003c\/p\u003e\n\u003cp\u003eThe two bottle sizes provide flexible options for hobbyists maintaining a single hospital tank, several community aquariums, or an aviary under veterinary guidance.\u003c\/p\u003e\n\u003cp\u003eUse Fix Zithro when early signs of bacterial stress appear. Symptoms may differ between fish and birds, so the lists below separate the most common signs by species.\u003c\/p\u003e\n\u003cdiv class=\"fph-two-column\"\u003e\n\u003cdiv class=\"fph-info-box\"\u003e\n\u003ch3\u003eFish-Specific Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eClamped or frayed fins associated with fin and tail rot\u003c\/li\u003e\n\u003cli\u003eRed or cloudy patches on the body\u003c\/li\u003e\n\u003cli\u003eFuzzy patches that may suggest columnaris\u003c\/li\u003e\n\u003cli\u003ePop-eye or exophthalmia\u003c\/li\u003e\n\u003cli\u003eGill irritation or labored gill movement\u003c\/li\u003e\n\u003cli\u003eSecondary bacterial problems around gill-fluke damage\u003c\/li\u003e\n\u003cli\u003eListlessness or persistent appetite loss\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-info-box\"\u003e\n\u003ch3\u003eBird-Specific Symptoms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSneezing or nasal discharge\u003c\/li\u003e\n\u003cli\u003eUpper respiratory tract infection signs\u003c\/li\u003e\n\u003cli\u003eSwollen eyes or sinus irritation\u003c\/li\u003e\n\u003cli\u003eSuspected Mycoplasma-related concerns\u003c\/li\u003e\n\u003cli\u003eSigns associated with Chlamydia psittaci or parrot fever\u003c\/li\u003e\n\u003cli\u003eRuffled feathers or a fluffed-up posture\u003c\/li\u003e\n\u003cli\u003eReduced activity or appetite loss\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"margin-top: 28px;\"\u003eAddress suspected bacterial problems early, maintain clean water, and consult an aquatic or avian professional whenever one is available.\u003c\/p\u003e\n\u003cp\u003eCombining treatment with proper husbandry gives fish and birds a better opportunity to recover while helping keep the aquarium or aviary stable.\u003c\/p\u003e\n\u003cdiv class=\"fph-order-note\"\u003e\n\u003cp\u003e\u003cstrong\u003eOrder online for same-day dispatch\u003c\/strong\u003e on qualifying orders placed before 1:30 p.m. CT, Monday through Friday. Fix Zithro ships directly 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 and non-food pet birds only. It is not for animals used for food.\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fph-section\" id=\"bird-zithro-vs-fix-zithro\"\u003e\n\u003ch2 class=\"fph-section-title\"\u003eBird Zithro vs Fix Zithro: What Changed?\u003c\/h2\u003e\n\u003cp\u003eIf you previously purchased Thomas Labs Bird Zithro, Fish Zithro, or Aqua Zithro, 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 ingredient\u003c\/span\u003e\n\u003ch3\u003eSame Azithromycin, Same Strength\u003c\/h3\u003e\n\u003cp\u003eFix Zithro contains the same 250 mg of azithromycin per tablet associated with Bird Zithro, Fish Zithro, and Aqua Zithro.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-comparison-card\"\u003e\n\u003cspan class=\"fph-small-label\"\u003eManufacturer\u003c\/span\u003e\n\u003ch3\u003eNew Manufacturer\u003c\/h3\u003e\n\u003cp\u003eFix Zithro is made by Aqua Soma Labs in the United States, replacing the discontinued Thomas Labs product line.\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 Crushable Tablet Form\u003c\/h3\u003e\n\u003cp\u003eFix Zithro uses a crushable tablet format that can be dissolved in aquarium water or administered to birds exactly as directed by an avian veterinarian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-comparison-card\"\u003e\n\u003cspan class=\"fph-small-label\"\u003eBottle sizes\u003c\/span\u003e\n\u003ch3\u003e12-Count and 30-Count Options\u003c\/h3\u003e\n\u003cp\u003eChoose a 12-count bottle for smaller setups or occasional use, or a 30-count bottle for multiple tanks or veterinarian-directed aviary management.\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 Zithro for Fish \u0026amp; Birds\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\u003eBacterial Support for Fish \u0026amp; Birds\u003c\/h3\u003e\n\u003cp\u003eFix Zithro provides azithromycin for ornamental fish and non-food pet birds. It may help manage fin and tail rot, columnaris, gill disease, and early respiratory or ornithosis-complex signs when used as directed.\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\u003eReady to Use Promptly\u003c\/h3\u003e\n\u003cp\u003eKeeping Fix Zithro properly stored means treatment is available when early bacterial signs appear. Avian use should still follow professional veterinary guidance.\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\u003eHelps With Internal and External Problems\u003c\/h3\u003e\n\u003cp\u003eAzithromycin may be used for skin lesions, ulcers, fin damage, and internal bacterial concerns in a hospital tank, as well as part of a veterinarian-directed plan for respiratory or Mycoplasma-related concerns in birds.\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\u003eConsistent 250 mg Tablets\u003c\/h3\u003e\n\u003cp\u003eEach tablet contains a consistent 250 mg amount, simplifying treatment calculations across different aquarium volumes.\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\u003eEasy to Prepare\u003c\/h3\u003e\n\u003cp\u003eCrushable tablets can be dissolved in aquarium water or administered to birds in the exact form and amount directed by an avian veterinarian.\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\u003eFreshwater, Saltwater \u0026amp; Aviary Setups\u003c\/h3\u003e\n\u003cp\u003eFix Zithro can be used in properly prepared freshwater or marine treatment systems and may be considered for pigeons and ornamental birds under veterinary supervision.\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\u003eIdeal for Hospital Tanks and Quarantine\u003c\/h3\u003e\n\u003cp\u003eA separate hospital tank or treatment enclosure reduces unnecessary exposure of healthy animals and allows more accurate observation and treatment control.\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\u003cdiv class=\"fph-directions-label\"\u003eDirections for Use:\u003c\/div\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\u003eSet Up a Separate Treatment Area\u003c\/h3\u003e\n\u003cp\u003eMove affected fish to a dedicated hospital or quarantine tank.\u003c\/p\u003e\n\u003cp\u003eWhere practical, birds requiring treatment should be separated into an appropriate treatment enclosure under veterinary guidance.\u003c\/p\u003e\n\u003cp\u003eSeparation helps protect healthy tank mates or flock members and allows more accurate observation and treatment.\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\u003eDirections for Fish Aquariums\u003c\/h3\u003e\n\u003cp\u003eDissolve one 250 mg tablet per 10 gallons or 38 litres of water in the hospital tank.\u003c\/p\u003e\n\u003cp\u003eMix the tablet in a clean cup of aquarium water first, then distribute the prepared solution evenly around the treatment tank.\u003c\/p\u003e\n\u003cp\u003eRepeat the treatment every 24 hours for 5 to 7 days while closely monitoring water quality and fish behavior.\u003c\/p\u003e\n\u003cp\u003eFollow the current bottle label or an aquatic veterinarian's instructions when they differ from this quick-reference information.\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\u003eUse in Pet Birds Under Veterinary Guidance\u003c\/h3\u003e\n\u003cp\u003eAdminister Fix Zithro to pigeons and other non-food pet birds only under the direction of an avian veterinarian.\u003c\/p\u003e\n\u003cp\u003eThe veterinarian should determine the correct amount for the bird's species, weight, condition, frequency, and treatment duration.\u003c\/p\u003e\n\u003cp\u003eTablets may be given whole, divided, or crushed and mixed with food or drinking water only as specifically instructed.\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\u003eMaintain Water Quality \u0026amp; Finish Treatment\u003c\/h3\u003e\n\u003cp\u003ePerform partial water changes when needed between treatments to keep ammonia and nitrite low.\u003c\/p\u003e\n\u003cp\u003eMaintain strong aeration throughout treatment.\u003c\/p\u003e\n\u003cp\u003eContinue for the complete recommended duration, even if the animal appears better, unless a veterinarian advises otherwise.\u003c\/p\u003e\n\u003cp\u003eIf no improvement appears after several days, or symptoms worsen, consult an aquatic or avian professional.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"fph-subtitle\"\u003eFix Zithro 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\u003eAzithromycin per use\u003c\/th\u003e\n\u003cth\u003e250 mg tablets\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\u003e250 mg\u003c\/td\u003e\n\u003ctd\u003e1 tablet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20 gallons (76 L)\u003c\/td\u003e\n\u003ctd\u003e500 mg\u003c\/td\u003e\n\u003ctd\u003e2 tablets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30 gallons (114 L)\u003c\/td\u003e\n\u003ctd\u003e750 mg\u003c\/td\u003e\n\u003ctd\u003e3 tablets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40 gallons (151 L)\u003c\/td\u003e\n\u003ctd\u003e1,000 mg\u003c\/td\u003e\n\u003ctd\u003e4 tablets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55 gallons (208 L)\u003c\/td\u003e\n\u003ctd\u003eApproximately 1,375 mg\u003c\/td\u003e\n\u003ctd\u003e5 to 6 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\"\u003eThese figures follow the supplied guideline of one 250 mg tablet per 10 gallons, approximately 25 mg per gallon. Dose according to the actual treatment-tank water volume, not the number of fish. The current bottle label or your aquatic veterinarian's directions take priority over this quick-reference chart.\u003c\/div\u003e\n\u003ch3 class=\"fph-subtitle\"\u003eAmounts for Pet Birds\u003c\/h3\u003e\n\u003cdiv class=\"fph-info-box\"\u003e\n\u003cp\u003eBird amounts are determined by body weight rather than aquarium-water volume, so there is no universal bird chart.\u003c\/p\u003e\n\u003cp\u003eThe appropriate amount depends on the species, body weight, condition being treated, administration method, and overall health of the bird.\u003c\/p\u003e\n\u003cp\u003eAn avian veterinarian must determine the amount, frequency, and duration.\u003c\/p\u003e\n\u003cp\u003eDo not estimate an avian amount independently or use the aquarium chart for birds.\u003c\/p\u003e\n\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 or eat less, and treatment water may look slightly cloudy. 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 fin damage or red patches that stop spreading, returning appetite, and steadier breathing. Seek professional guidance if the fish worsen or no improvement appears by day five.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-timeline-card\"\u003e\n\u003ch3\u003eDays 5 to 7\u003c\/h3\u003e\n\u003cp\u003eComplete the recommended treatment even when improvement appears. Afterward, perform a partial water change and restore activated carbon.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 class=\"fph-subtitle\"\u003eWhat You Need for Treatment\u003c\/h3\u003e\n\u003cdiv class=\"fph-info-box\"\u003e\n\u003cp\u003ePrepare the following supplies before starting treatment:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA separate hospital or quarantine tank\u003c\/li\u003e\n\u003cli\u003eA heater suitable for the fish species\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 aquarium dechlorinator\u003c\/li\u003e\n\u003cli\u003eA small net for careful transfer\u003c\/li\u003e\n\u003cli\u003eA clean cup for dissolving each tablet\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 Quarantine affected fish and birds away from healthy companions whenever practical. A dedicated treatment setup makes observation, water changes, and treatment control easier while reducing unnecessary exposure.\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 Zithro Works\u003c\/h2\u003e\n\u003cp class=\"fph-lead\"\u003eAzithromycin is the active ingredient in Fix Zithro, supplied at 250 mg per tablet.\u003c\/p\u003e\n\u003cp\u003eIn practical terms, azithromycin helps slow or stop the growth of certain susceptible bacteria affecting the gills, skin, and respiratory tract of ornamental fish and non-food pet birds.\u003c\/p\u003e\n\u003cp\u003eThe remainder of each tablet consists of standard inactive ingredients that help hold the tablet together, maintain stability during storage, and allow the tablet to disperse when mixed with aquarium water.\u003c\/p\u003e\n\u003cp\u003eBird administration should follow the exact preparation and delivery method supplied by an avian veterinarian.\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\u003eWhen used as directed, Fix Zithro generally causes no problems in ornamental fish and non-food pet birds.\u003c\/p\u003e\n\u003cp\u003eIncorrect amounts, unnecessarily prolonged use, or repeated antibacterial treatment can increase the risk of side effects and antibacterial resistance.\u003c\/p\u003e\n\u003cdiv class=\"fph-safety-grid\"\u003e\n\u003cdiv class=\"fph-safety-card\"\u003e\n\u003ch3\u003eFish\u003c\/h3\u003e\n\u003cp\u003eAzithromycin-based aquarium treatment may cause temporary hiding, mild water cloudiness, reduced activity, or decreased appetite.\u003c\/p\u003e\n\u003cp\u003eIf severe distress appears, including rapid gill movement, loss of balance, surface gasping, or remaining on the bottom, stop treatment, improve aeration, perform an appropriate water change, and seek aquatic veterinary advice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-safety-card\"\u003e\n\u003ch3\u003eBirds\u003c\/h3\u003e\n\u003cp\u003ePossible reactions may include reduced appetite, loose or changed droppings, and lethargy, particularly when the amount is too high or the bird is sensitive.\u003c\/p\u003e\n\u003cp\u003eIf a bird becomes fluffed up, inactive, has difficulty breathing, or stops eating, discontinue treatment and contact an avian veterinarian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-safety-card\"\u003e\n\u003ch3\u003eInvertebrates\u003c\/h3\u003e\n\u003cp\u003eDo not use Fix Zithro in display aquariums containing shrimp, snails, corals, or other sensitive invertebrates whenever a separate treatment tank is available.\u003c\/p\u003e\n\u003cp\u003eStrong antibacterial treatments may harm sensitive species or disrupt the aquarium ecosystem.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-safety-card\"\u003e\n\u003ch3\u003eSafe Use in Your System\u003c\/h3\u003e\n\u003cp\u003eTreat fish in a hospital or quarantine tank whenever possible.\u003c\/p\u003e\n\u003cp\u003eRemove activated carbon and switch off UV sterilization during treatment. Monitor ammonia, nitrite, oxygen, and temperature closely.\u003c\/p\u003e\n\u003cp\u003eDo not combine Fix Zithro with other antibacterial products unless specifically advised by a veterinarian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-warning\"\u003e\n\u003ch3\u003eImportant Safety Warning\u003c\/h3\u003e\n\u003cp\u003eFix Zithro is intended for ornamental aquarium fish and non-food pet birds only. It is not intended for animals raised for food.\u003c\/p\u003e\n\u003cp\u003eStore tablets in their original container in a cool, dry location protected from direct sunlight, excessive heat, and moisture.\u003c\/p\u003e\n\u003cp\u003eKeep the container tightly closed and out of reach of children and animals.\u003c\/p\u003e\n\u003cp\u003eAlways follow the directions printed on the current product label.\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\u003eSame-day dispatch may be available for qualifying orders placed before 1:30 p.m. CT, Monday through Friday.\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 items may be returned or exchanged within 30 days according to the current store guidelines.\u003c\/p\u003e\n\u003cp\u003eReview the full refund policy before returning any item.\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 Zithro used for in fish and birds?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Zithro contains azithromycin and is used for certain bacterial concerns in ornamental aquarium fish. These may include fin and tail rot, columnaris, gill disease, red or cloudy body areas, and certain internal bacterial problems.\u003c\/p\u003e\n\u003cp\u003eIn non-food pet birds, it may form part of a veterinarian-directed plan for certain respiratory, Mycoplasma-related, or Chlamydia psittaci concerns.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between Bird Zithro and Fix Zithro?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Zithro is the current Aqua Soma Labs product replacing discontinued Thomas Labs Bird Zithro and Fish Zithro products. It provides the familiar 250 mg azithromycin tablet strength in updated packaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs Fix Zithro a replacement for Aqua Zithro?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Zithro is presented as the current Aqua Soma Labs replacement for older Aqua Zithro products and provides 250 mg of azithromycin per tablet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs Fix Zithro the same as Fish Zithro?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Zithro is intended as the updated replacement for discontinued Fish Zithro products, with the same 250 mg azithromycin tablet strength and updated branding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhere can I buy azithromycin for fish online?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Zithro 250 mg tablets can be ordered through this online store in 12-count or 30-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\u003eIs azithromycin stronger than amoxicillin for fish?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eAzithromycin and amoxicillin are different antibacterial ingredients with different activity profiles. One is not automatically better or stronger for every infection. The appropriate choice depends on the suspected organism and the condition being treated.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I know if my fish might need azithromycin?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003ePossible bacterial signs include frayed fins, fuzzy or red body patches, cloudy areas, gill irritation, pop-eye, appetite loss, and reduced activity.\u003c\/p\u003e\n\u003cp\u003eSimilar signs may also be caused by parasites, fungal conditions, injuries, or poor water quality, so professional assessment is recommended when the cause is unclear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs azithromycin for birds the same as fish azithromycin?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Zithro contains azithromycin, but bird administration is based on body weight, species, condition, and veterinary instructions. Aquarium calculations must not be used for birds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat size aquarium can one Fix Zithro tablet treat?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eThe supplied aquarium guideline uses one 250 mg tablet per 10 gallons or approximately 38 litres of treatment water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs fish azithromycin available in 500 mg?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eThis Fix Zithro product is supplied in a 250 mg tablet strength. A 500 mg treatment amount would require two 250 mg tablets according to the supplied aquarium chart.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow long should I treat with Fix Zithro?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eThe supplied directions describe one treatment every 24 hours for approximately 5 to 7 days. Always follow the current bottle label or veterinary instructions.\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 steadier breathing, returning appetite, improved activity, and bacterial lesions that stop spreading.\u003c\/p\u003e\n\u003cp\u003eSeek professional advice if the animal becomes worse or no improvement appears after several days.\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\u003eFollow the product label, perform an appropriate partial water change, and restore activated carbon if normally used. Continue monitoring water quality and the condition of the treated fish.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use Fix Zithro in my main community or reef tank?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eA separate hospital tank is preferred. This reduces unnecessary exposure of healthy fish and sensitive invertebrates and helps protect the display aquarium's biological filtration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes Fix Zithro work in saltwater aquariums?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Zithro is presented for use in properly prepared freshwater and saltwater treatment tanks. A separate hospital tank is especially important for marine systems containing corals or invertebrates.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan Fix Zithro be used for racing pigeons?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Zithro may be considered for non-food pet birds, including racing pigeons, only under the direction of an avian veterinarian who determines the correct amount and duration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I combine Fix Zithro with other fish treatments?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eDo not combine Fix Zithro with other antibacterial or aquarium treatments unless a qualified veterinarian specifically recommends the combination.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan Fix Zithro treat fungal, viral, or parasitic infections?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Zithro is an antibacterial product. It should not be expected to treat fungal, viral, or parasitic conditions unless a professional has identified a separate appropriate reason for its use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs Fix Zithro safe for betta fish and small aquariums?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eSmall aquariums require careful volume calculations. The supplied guide is one 250 mg tablet per 10 gallons, so a smaller tank may require an accurately divided amount. Follow the bottle label or consult an aquatic veterinarian rather than estimating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow should I store and dispose of Fix Zithro tablets?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eStore tablets tightly closed in a cool, dry place protected from direct sunlight and moisture.\u003c\/p\u003e\n\u003cp\u003eFollow the current 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\"\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 Cin (Clindamycin) 150 mg\u003c\/h3\u003e\n\u003cp\u003eA treatment for certain Gram-positive bacterial concerns, including skin and soft-tissue problems 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 Sulfa (SMZ\/TMP) 960 mg\u003c\/h3\u003e\n\u003cp\u003eA treatment used for a range of bacterial concerns affecting ornamental aquarium fish.\u003c\/p\u003e\n\u003ca href=\"https:\/\/www.calvetsupply.com\/products\/fish-sulfa\"\u003eShop Fix Sulfa →\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 treatment for certain Gram-positive 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, and certain 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 certain Gram-negative bacterial concerns including fin rot, ulcers, columnaris, and septicemia.\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 our complete Fish \u0026amp; Bird Antibacterial Collection for additional Fix line products and related treatments.\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 Treatment Tips\u003c\/h3\u003e\n\u003cp\u003eVisit the Fish \u0026amp; Bird Antibacterial Care Blog for practical care guides, aquarium water advice, and treatment information.\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, duration, storage information, and warnings are taken from the current product label for this item.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-verification-card\"\u003e\n\u003ch3\u003eSpecification Validation\u003c\/h3\u003e\n\u003cp\u003eKey details such as the active ingredient, tablet strength, and bottle counts are cross-checked against available manufacturer 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 strengths, directions, safety information, and storage details 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 the product label, packaging, tablet count, manufacturer information, 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 \u003cspan style=\"color: rgb(255, 128, 0);\"\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.calvetsupply.com\/pages\/contact-us\" style=\"color: rgb(255, 128, 0);\"\u003econtact us\u003c\/a\u003e\u003ca class=\"fph-contact-link\" href=\"\/pages\/contact\" style=\"color: rgb(255, 128, 0);\"\u003e\u003c\/a\u003e \u003c\/strong\u003e\u003c\/span\u003eso 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":"250-mg (12 Count)","offer_id":45972964966434,"sku":"434609","price":29.99,"currency_code":"USD","in_stock":true},{"title":"250-mg (30 Count)","offer_id":45972964999202,"sku":"218533","price":95.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0891\/7008\/3874\/files\/FishZithro.png?v=1783910721"}],"url":"https:\/\/calvetsupply.com\/collections\/fish-zithro.oembed","provider":"Calvetsupply","version":"1.0","type":"link"}