{"product_id":"fish-zole","title":"Fish Zole (Fix Zole) Metronidazole 500mg \u0026 250mg Fish Antibacterial","description":"\u003cstyle\u003e\n  .fph-product-copy {\n    --fph-text: #1f2937;\n    --fph-heading: #111827;\n    --fph-border: #d9dde6;\n    --fph-surface: #f8fafc;\n    --fph-surface-alt: #f3f5f8;\n    --fph-accent: #143583;\n    --fph-danger: #c62828;\n    --fph-warning: #f59e0b;\n    --fph-radius: 18px;\n    color: var(--fph-text);\n    font-size: clamp(15px, 1.05vw, 17px);\n    line-height: 1.75;\n    overflow-wrap: break-word;\n  }\n\n  .fph-product-copy,\n  .fph-product-copy * {\n    box-sizing: border-box;\n  }\n\n  .fph-product-copy .fph-section \u003e * + *,\n  .fph-product-copy .fph-acc-body \u003e * + *,\n  .fph-product-copy .fph-more-body \u003e * + * {\n    margin-top: clamp(14px, 2vw, 20px);\n  }\n\n  .fph-product-copy h2 {\n    margin: 0;\n    color: var(--fph-heading);\n    font-size: clamp(23px, 2.6vw, 33px);\n    line-height: 1.24;\n    letter-spacing: 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clamp(16px, 2.4vw, 22px);\n  }\n\n  \/* --- Inline Warning --- *\/\n  .fph-product-copy .fph-inline-warning {\n    color: var(--fph-danger);\n    font-weight: 700;\n  }\n\n  \/* --- Section scroll offset (kept: section ids stay linkable) --- *\/\n  .fph-product-copy [id] {\n    scroll-margin-top: 80px;\n  }\n\n  \/* --- Responsive --- *\/\n  @media (max-width: 989px) {\n    .fph-product-copy .fph-card-list,\n    .fph-product-copy .fph-info-grid {\n      grid-template-columns: 1fr;\n    }\n  }\n\n  @media (max-width: 767px) {\n    .fph-product-copy {\n      font-size: 15px;\n      line-height: 1.68;\n    }\n\n    .fph-product-copy h2 {\n      font-size: clamp(22px, 7vw, 28px);\n    }\n\n    .fph-product-copy .fph-step-list li {\n      padding: 64px 16px 16px;\n    }\n\n    .fph-product-copy .fph-step-list li::before {\n      top: 16px;\n      left: 16px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"fph-product-copy\"\u003e\n\u003csection class=\"fph-section\" id=\"fph-intro\"\u003e\n\u003ch2\u003eFish Metronidazole 500mg \u0026amp; 250mg: Metronidazole for Fish with Hexamita,\u003cbr\u003eHole in the Head and Internal Parasites\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFish Zole (Fix Zole)\u003c\/strong\u003e is a fish metronidazole 500mg and 250mg tablets for ornamental aquarium fish and non-food pet birds. Aquarists use it for protozoan flagellates such as Hexamita, Spironucleus, and hole in the head disease in freshwater and saltwater tanks, at 250 mg per 10 gallons or 500 mg per 20 gallons, every 24 hours for 5 to 10 days.\u003c\/p\u003e\n\u003cp\u003eAquarists have known this metronidazole tablet under earlier names, including the discontinued Thomas Labs Fish Zole and Fish Zole Forte, along with Aqua-Zole, fishzole, and fishbiotic metronidazole. Fix Zole is the current Aqua Soma Labs version, replacing those older products with the same metronidazole at 250 mg or 500 mg per tablet. Keepers who previously used MetroPlex will find this a tablet-based option. Some keepers also search for it as fish flagyl, since it is another name for metronidazole.\u003c\/p\u003e\n\u003cp\u003eUse Fix Zole when fish or pet birds show signs that may be linked to protozoan flagellates or anaerobic-sensitive issues. Common signs differ between species, so check the lists below to identify what to watch for.\u003c\/p\u003e\n\u003cp class=\"fph-alert\"\u003e\u003cstrong\u003eImportant Notice:\u003c\/strong\u003e This product is \u003cstrong\u003eintended for aquarium and ornamental fish and pet birds only\u003c\/strong\u003e. It is \u003cstrong\u003enot for animals used for food\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdetails class=\"fph-more\"\u003e\n\u003csummary\u003e\u003cspan class=\"fph-more-open\"\u003eSee More +\u003c\/span\u003e\u003cspan class=\"fph-more-close\"\u003eSee Less −\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"fph-more-body\"\u003e\n\u003cdiv class=\"fph-info-grid\"\u003e\n\u003cdiv class=\"fph-info-card\"\u003e\n\u003ch3\u003eFish-Specific Symptoms\u003c\/h3\u003e\n\u003cul class=\"fph-symptom-list\"\u003e\n\u003cli\u003eLoss of appetite, gradual weight loss\u003c\/li\u003e\n\u003cli\u003eWhite stringy droppings\u003c\/li\u003e\n\u003cli\u003e\"Hole-in-the-head\" lesions (pits on head and lateral line)\u003c\/li\u003e\n\u003cli\u003eMalawi bloat (cichlid bloat), swollen abdomen\u003c\/li\u003e\n\u003cli\u003eFaded color, darkening, or body discoloration\u003c\/li\u003e\n\u003cli\u003eLethargy, hiding, reduced activity\u003c\/li\u003e\n\u003cli\u003eSudden death in cichlids and discus (Hexamita \/ Spironucleus)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-info-card\"\u003e\n\u003ch3\u003eBird-Specific Symptoms (Under Avian Vet Guidance)\u003c\/h3\u003e\n\u003cul class=\"fph-symptom-list\"\u003e\n\u003cli\u003eYellow plaques in throat or crop (canker \/ trichomonosis)\u003c\/li\u003e\n\u003cli\u003ePigeon canker, especially in racing pigeons\u003c\/li\u003e\n\u003cli\u003eFrounce in raptors (falcons, hawks, owls)\u003c\/li\u003e\n\u003cli\u003eLoose or watery droppings (possible giardia)\u003c\/li\u003e\n\u003cli\u003eReduced appetite, weight loss\u003c\/li\u003e\n\u003cli\u003eDifficulty swallowing or visible discomfort when eating\u003c\/li\u003e\n\u003cli\u003eFluffed-up feathers, lethargy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eSupporting treatment with clean water, stable temperature, and appropriate husbandry helps reduce setbacks and improve outcomes. For pet birds, always confirm the diagnosis with an avian veterinarian before administering metronidazole.\u003c\/p\u003e\n\u003cp class=\"fph-tip\"\u003e\u003cstrong\u003eOrder online:\u003c\/strong\u003e Fix Zole ships from our U.S. warehouse the same business day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003cdetails class=\"fph-acc\" id=\"fph-comparison\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eFish Zole vs Fix Zole: What Changed?\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cp\u003eIf you previously used Thomas Labs Fish Zole, Fish Zole Forte, or Aqua-Zole by Aqua Soma Labs, here is what you need to know about Fix Zole:\u003c\/p\u003e\n\u003cdiv class=\"fph-info-grid\"\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eSame as Fish Zole, Fish Zole Forte, and Aqua-Zole\u003c\/strong\u003e\u003cbr\u003eFix Zole uses the same metronidazole that hobbyists relied on under the Thomas Labs Fish Zole, Fish Zole Forte, and Aqua Soma Labs Aqua-Zole names, at 250 mg or 500 mg per tablet.\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eNew Manufacturer\u003c\/strong\u003e\u003cbr\u003eProduced by Aqua Soma Labs, which now makes the Fix line of fish and bird antibacterial treatments (Fix Mox, Fix Doxy, Fix Zole) after Thomas Labs discontinued its Fish Zole product.\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eSame 60-Count Bottles\u003c\/strong\u003e\u003cbr\u003eEach bottle contains 60 tablets, the same count hobbyists expect. Choose 250 mg or 500 mg to match your tank size and treatment plan.\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eUpdated Packaging, Same Formula\u003c\/strong\u003e\u003cbr\u003eThe label and brand name are new. The metronidazole inside is the same formula the hobby has used for years.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-acc\" id=\"fph-benefits\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eBenefits of Fix Zole for Fish \u0026amp; Birds\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cul class=\"fph-card-list\"\u003e\n\u003cli\u003e\n\u003ch3\u003eTargeted Protozoan Support\u003c\/h3\u003e\n\u003cp\u003eCommonly used to help manage internal parasites and protozoan flagellates such as Hexamita and Spironucleus, which are often associated with appetite loss, weight loss, white stringy poop, Malawi bloat, and \"hole-in-the-head\" type signs in certain freshwater fish such as cichlids and discus.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eStocked and Ready to Ship\u003c\/h3\u003e\n\u003cp\u003eFix Zole ships from our U.S. warehouse the same business day, so you can start treatment quickly when signs appear. For pet birds, confirm the diagnosis with an avian veterinarian before use.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eAvian Vet-Guided Option\u003c\/h3\u003e\n\u003cp\u003eIn non-food pet birds, metronidazole may be used under avian veterinary guidance for certain protozoal concerns such as giardia, frounce (common in raptors), and as a pigeon canker option for trichomonosis, especially in racing pigeons and related species.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eFlexible 250 mg or 500 mg per Tablet\u003c\/h3\u003e\n\u003cp\u003eChoose the strength that fits your setup and plan. A consistent mg per tablet (in \u003cstrong\u003e60-count\u003c\/strong\u003e bottles) lets you scale the dose across different tank sizes or care routines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eIdeal for Hospital Tanks and Quarantine\u003c\/h3\u003e\n\u003cp\u003eMany hobbyists treat in a separate hospital tank for better observation and to help protect the display tank's biofilter and sensitive tank mates. Tablets can be pre-dissolved in a small cup of aquarium water for more even distribution.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eFits a Complete Care Plan\u003c\/h3\u003e\n\u003cp\u003eTreatment alone rarely fixes the problem. The best results come when you also keep the temperature stable, the water clean, stress low, and feeding appropriate.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eTargeted, Not a One-Size-Fits-All Remedy\u003c\/h3\u003e\n\u003cp\u003eFix Zole is not typically used for ich (white spot), gill flukes, or Costia, and it is not a first choice for typical fin rot unless the cause has been confirmed. If symptoms persist, confirm the diagnosis or consult an aquatic or avian professional.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-acc\" id=\"fph-dosage\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eUsage Guidelines \u0026amp; Instructions\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cp\u003e\u003cstrong\u003eDirections for Use:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col class=\"fph-step-list\"\u003e\n\u003cli\u003e\n\u003ch3\u003eSet Up a Separate Treatment Area\u003c\/h3\u003e\n\u003cp\u003eMove affected fish to a dedicated hospital tank when possible. This helps you monitor behavior, control dosing more precisely, and reduce unnecessary exposure in the display aquarium.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eDirections for Fish Aquariums\u003c\/h3\u003e\n\u003cp\u003eYou may pre-dissolve the tablet in a small cup of aquarium water, then distribute it evenly across the fish tank you are treating:\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e250 mg:\u003c\/strong\u003e Add \u003cstrong\u003eone 250 mg tablet per 10 gallons (38 L)\u003c\/strong\u003e of water.\u003cbr\u003e\u003cstrong\u003e500 mg:\u003c\/strong\u003e Add \u003cstrong\u003eone 500 mg tablet per 20 gallons (76 L)\u003c\/strong\u003e of water.\u003cbr\u003e\u003cbr\u003eRepeat the dose every \u003cstrong\u003e24 hours\u003c\/strong\u003e, performing a partial water change between treatments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eFilter Adjustments\u003c\/h3\u003e\n\u003cp\u003eRemove activated carbon or other chemical filtration media during treatment and keep good aeration running, since carbon can reduce metronidazole availability in the water.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eContinue Treatment and Monitor Results\u003c\/h3\u003e\n\u003cp\u003eContinue daily treatment for \u003cstrong\u003e5 to 10 days\u003c\/strong\u003e (do not exceed 10 days). If there is \u003cstrong\u003eno improvement within 5 days\u003c\/strong\u003e, discontinue treatment and consult an aquatic professional.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eUse in Pet Birds (Under Veterinary Guidance)\u003c\/h3\u003e\n\u003cp\u003eOnly administer metronidazole to non-food pet birds under the direction of an avian veterinarian. Your vet should confirm the diagnosis and advise the correct amount for the bird's weight, frequency, and duration. Tablets may be given whole, split, or crushed and mixed into soft food exactly as instructed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ctable class=\"fph-dose-table\"\u003e\n\u003ccaption\u003eFix Zole Amounts by Aquarium Size\u003c\/caption\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eTank volume\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eMetronidazole per use\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e250 mg tablets\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e500 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\u003c\/td\u003e\n\u003ctd\u003en\/a\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\u003c\/td\u003e\n\u003ctd\u003e1\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\u003c\/td\u003e\n\u003ctd\u003e1 + one 250 mg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40 gallons (151 L)\u003c\/td\u003e\n\u003ctd\u003e1000 mg\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e55 gallons (208 L)\u003c\/td\u003e\n\u003ctd\u003eabout 1375 mg\u003c\/td\u003e\n\u003ctd\u003e5 to 6\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThese figures come from the label-style guideline of 250 mg per 10 gallons, roughly 25 mg per gallon. Dose by the water volume of your treatment tank, not by the number of fish, give one dose every 24 hours for 5 to 10 days, and round to the nearest practical tablet. The bottle label or your aquatic veterinarian takes priority over this quick-reference chart.\u003c\/p\u003e\n\u003ch3\u003eWhat to Expect During Treatment\u003c\/h3\u003e\n\u003cdiv class=\"fph-info-grid\"\u003e\n\u003cdiv class=\"fph-info-card\"\u003e\n\u003ch3\u003eDays 1 to 2\u003c\/h3\u003e\n\u003cp\u003eFish may hide or eat less while the treatment takes hold. This is normal early on. Keep dosing on schedule and keep aeration strong.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-info-card\"\u003e\n\u003ch3\u003eDays 3 to 5\u003c\/h3\u003e\n\u003cp\u003eLook for signs it is working: appetite picking back up, droppings returning to normal, steadier activity. If nothing has changed by day 5, or the fish look worse, stop and ask an aquatic veterinarian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-info-card\"\u003e\n\u003ch3\u003eDays 5 to 10\u003c\/h3\u003e\n\u003cp\u003eEven if the fish are improving, finish all the recommended days so the problem does not return. Afterward, run a partial water change and put activated carbon back in to clear any leftover treatment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fph-info-card\"\u003e\n\u003ch3\u003eWhat You Need Before You Start\u003c\/h3\u003e\n\u003cp\u003eGet these ready before the first dose:\u003c\/p\u003e\n\u003cul class=\"fph-symptom-list\"\u003e\n\u003cli\u003eA separate hospital or quarantine tank, so you are not treating the whole display.\u003c\/li\u003e\n\u003cli\u003eA heater and an air stone or sponge filter for steady temperature and strong aeration.\u003c\/li\u003e\n\u003cli\u003eAn ammonia and nitrite test kit to keep tabs on water quality.\u003c\/li\u003e\n\u003cli\u003eA dechlorinator for the water changes between doses.\u003c\/li\u003e\n\u003cli\u003eA small net and a clean cup for gentle transfer and pre-dissolving the tablet.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp class=\"fph-tip\"\u003e\u003cstrong\u003ePro Tip:\u003c\/strong\u003e After treatment, perform a partial water change and reintroduce activated carbon (if you normally use it) to help clear any leftover treatment from the water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-acc\" id=\"fph-mechanism\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eHow Fix Zole Works\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cp\u003eFix Zole uses metronidazole, the same molecule hobbyists have relied on for years. In plain terms, it works against certain protozoa and anaerobic organisms so affected fish have a better chance to recover. This is why keepers reach for it with suspected flagellate problems such as Hexamita and Spironucleus, rather than for ich, flukes, fungus, or typical fin rot.\u003c\/p\u003e\n\u003cp\u003eEach tablet also contains standard ingredients that hold the tablet together and help it store well and disperse when mixed with water. The exact list of those ingredients is not always published and can vary by batch.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-acc fph-acc--warn\" id=\"fph-safety\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eSafety and Tank Notes\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cp\u003eWhen used as directed, Fix Zole (metronidazole) usually causes no problems in ornamental aquarium fish and non-food pet birds. Incorrect amounts, prolonged use, unnecessary repeat treatments, or combining products can increase the risk of stress and side effects.\u003c\/p\u003e\n\u003cul class=\"fph-card-list\"\u003e\n\u003cli\u003e\n\u003ch3\u003eFish\u003c\/h3\u003e\n\u003cp\u003ePossible reactions include temporary reduced appetite, mild lethargy, or hiding behavior. If you see severe distress (rapid gill movement, loss of balance, gasping at the surface, or lying on the bottom), stop treatment, increase aeration, perform a partial water change, and seek aquatic veterinary advice.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eBirds\u003c\/h3\u003e\n\u003cp\u003eUse metronidazole only under avian veterinary guidance. Possible reactions may include decreased appetite, loose or changed droppings, and lethargy, especially if the bird is sensitive or the amount is not correct. If your bird appears fluffed up, inactive, or stops eating, discontinue use and contact an avian veterinarian.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eInvertebrates\u003c\/h3\u003e\n\u003cp\u003eSensitivity can vary by species. Whenever possible, treat fish in a separate hospital tank instead of dosing a display aquarium that contains shrimp, snails, corals, or other invertebrates. If needed, relocate sensitive invertebrates before treatment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eSafe Use in Your System\u003c\/h3\u003e\n\u003cp\u003eDo not mix Fix Zole with other treatments or products unless advised by a professional. Avoid routine preventative use. If symptoms persist or return, confirm the diagnosis before treating again.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eStorage \u0026amp; Handling\u003c\/h3\u003e\n\u003cp\u003eStore at controlled room temperature of \u003cstrong\u003e59 to 86 F (15 to 30 C)\u003c\/strong\u003e in a cool, dry place. Keep the container tightly closed to protect tablets from moisture and light. Keep out of reach of children and pets.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eImportant Safety Warning\u003c\/h3\u003e\n\u003cp\u003eFix Zole is intended for \u003cstrong\u003eornamental aquarium fish and non-food pet birds only\u003c\/strong\u003e. It is not for animals raised for food. Always follow label directions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-acc\" id=\"fph-shipping\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eShipping \u0026amp; Returns\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cdiv class=\"fph-info-grid\"\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eShipping Policy:\u003c\/strong\u003e Orders ship from our U.S. warehouse within 1 business day via USPS or UPS, with rates and delivery times calculated at checkout. For full details, see our \u003ca href=\"https:\/\/finepethealth.com\/policies\/shipping-policy\"\u003eshipping policy\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eRefund Policy:\u003c\/strong\u003e If there is an issue with your order, you may be able to return or exchange items within 30 days according to our store guidelines. Before sending anything back, please review our \u003ca href=\"https:\/\/finepethealth.com\/policies\/refund-policy\"\u003erefund policy\u003c\/a\u003e carefully.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-acc\"\u003e\n\u003csummary\u003e\n\u003ch2\u003eMore Fish \u0026amp; Bird Treatments\u003c\/h2\u003e\n\u003c\/summary\u003e\n\u003cdiv class=\"fph-acc-body\"\u003e\n\u003cdiv class=\"fph-info-grid\"\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Mox (Amoxicillin) 250\/500mg\u003c\/strong\u003e A treatment for fin rot, dropsy, ulcers and other bacterial infections in ornamental fish. Available in 30-count and 100-count capsules. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-mox\"\u003eShop Fix Mox\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Doxy (Doxycycline) 100mg\u003c\/strong\u003e A treatment for columnaris, respiratory infections, and Mycoplasma in fish and non-food pet birds. Available in 30-count and 60-count tablets. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-doxy\"\u003eShop Fix Doxy\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Zithro (Azithromycin) 250mg\u003c\/strong\u003e A treatment for fin rot, columnaris, gill disease, and avian respiratory concerns in fish and non-food pet birds. Available in 12-count and 30-count tablets. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-zithro\"\u003eShop Fix Zithro\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Cin (Clindamycin) 150mg\u003c\/strong\u003e A treatment for gram-positive bacterial problems, including skin and soft-tissue concerns, in ornamental fish. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-cin\"\u003eShop Fix Cin\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Sulfa (SMZ\/TMP) 960mg\u003c\/strong\u003e A treatment used against a range of bacterial infections in ornamental fish. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-sulfa\"\u003eShop Fix Sulfa\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Pen (Penicillin) 500mg\u003c\/strong\u003e A treatment for gram-positive bacterial problems in ornamental fish and non-food pet birds. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-pen\"\u003eShop Fix Pen\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Flex (Cephalexin) 250\/500mg\u003c\/strong\u003e A treatment for fin rot, ulcers, and bacterial skin infections in ornamental fish and non-food pet birds. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-flex\"\u003eShop Fix Flex\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eFix Flox (Ciprofloxacin) 500mg\u003c\/strong\u003e A treatment for gram-negative bacterial problems, including fin rot, ulcers, columnaris, and septicemia, in ornamental fish and non-food pet birds. \u003ca href=\"https:\/\/finepethealth.com\/products\/fish-flox\"\u003eShop Fix Flox\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eBrowse all treatments\u003c\/strong\u003e Explore our complete \u003ca rel=\"noopener\" href=\"https:\/\/finepethealth.com\/collections\/fish-bird-antibacterials\"\u003e\u003cstrong\u003eFish \u0026amp; Bird Antibacterials Collection\u003c\/strong\u003e\u003c\/a\u003e for more Fix line products and related treatments.\u003c\/p\u003e\n\u003cp class=\"fph-info-card\"\u003e\u003cstrong\u003eGuides and treatment tips\u003c\/strong\u003e Visit the \u003ca rel=\"noopener\" href=\"https:\/\/finepethealth.com\/blogs\/fish-and-bird-antibacterials\"\u003e\u003cstrong\u003eFish \u0026amp; Bird Treatments Blog\u003c\/strong\u003e\u003c\/a\u003e for practical usage guides, water-care advice and treatment tips.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003csection class=\"fph-section\" id=\"fph-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"fph-faq-list\"\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eWhat is fish zole?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFish zole is a common name for metronidazole sold as an aquarium treatment. Fix Zole is the current version: metronidazole 250 mg and 500 mg tablets for ornamental fish and non-food pet birds. It is used for protozoan problems like Hexamita, Spironucleus, and hole in the head disease, not ich, flukes, or fungus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eWhat does metronidazole treat in fish?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eIn aquarium fish, metronidazole is mainly used for protozoan flagellates such as Hexamita and Spironucleus, the organisms often behind hole-in-the-head disease, white stringy droppings, and unexplained wasting in cichlids and discus. It does not treat ich, flukes, fungus, or most typical fin rot, which need different treatments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eWhat is Fix Zole used for in aquarium fish and pet birds?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Zole (metronidazole) is commonly used by hobbyists to help manage certain protozoan concerns in ornamental aquarium fish, including issues often associated with Hexamita, Spironucleus, and internal parasites. In non-food pet birds, metronidazole may be used only under avian veterinary guidance for confirmed protozoal concerns such as canker (trichomonosis).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eIs Fix Zole the same as Fish Zole or Fish Zole Forte?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Zole contains the same metronidazole hobbyists have historically searched for as Thomas Labs Fish Zole, Fish Zole Forte, Aqua-Zole, or fishbiotic metronidazole. The 250 mg option stands in for the standard Fish Zole strength, and the 500 mg option is the Fish Zole Forte equivalent. Product names and directions can vary, so always follow the instructions for the specific product you have.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eIs Fix Zole the same as Aqua-Zole by Aqua Soma Labs?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eYes. Aqua-Zole was an earlier brand name; Fix Zole is the current Aqua Soma Labs metronidazole product, with the same metronidazole at 250 mg or 500 mg per tablet in 60-count bottles. The metronidazole, strength, and intended use remain the same; only the brand name and packaging have been updated.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eWill Fix Zole harm my tank's biological filter?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eMetronidazole mainly targets protozoa and anaerobic organisms, so many keepers find it gentler on the nitrifying bacteria in a biofilter than some broad treatments. It is not risk-free, though. Treating in a separate hospital tank is the safest approach. If you must dose a cycled display, keep activated carbon out, run strong aeration, and test ammonia and nitrite daily so you can react to any spike with a partial water change.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eWhat is the fish metronidazole 500mg dosage?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eThe fish metronidazole 500mg dosage guide is one 500 mg tablet per 20 gallons (76 L) of tank water, dosed every 24 hours for 5 to 10 days, with a partial water change between doses. For the 250 mg strength, use one tablet per 10 gallons (38 L), roughly 25 mg per gallon. Do not exceed 10 days, and if there is no improvement within 5 days, stop and ask an aquatic veterinarian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eCan metronidazole treat fish bloat?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eIt is one of the treatments hobbyists reach for when Malawi bloat (cichlid bloat) is suspected, because that problem is often linked to Hexamita flagellates. Metronidazole is used at the standard guide of 250 mg per 10 gallons (38 L), and keepers pair treatment with clean water, stable temperature, and reduced stress. Bloat has several possible causes, so if there is no change within 5 days, stop and confirm the diagnosis with an aquatic veterinarian.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eWhere can I buy metronidazole for fish? Do Walmart or PetSmart sell it?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eYou can order Fix Zole, the current fish metronidazole, directly from Fine Pet Health in 250 mg and 500 mg strengths, in 60-count bottles. General retailers such as Walmart, PetSmart, Petco, and Tractor Supply do not carry the Aqua Soma Labs line, so a dedicated online supplier is the reliable route. Orders ship from our U.S. warehouse the same business day via USPS or UPS.\u003c\/p\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/finepethealth.com\/collections\/fish-bird-antibacterials\" class=\"fph-faq-link\"\u003eBrowse Fish \u0026amp; Bird Treatments Collection →\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"fph-faq-item\"\u003e\n\u003csummary\u003eCan fish zole be used for dogs or cats?\u003c\/summary\u003e\n\u003cdiv class=\"fph-faq-answer\"\u003e\n\u003cp\u003eFix Zole is labeled for \u003cstrong\u003eornamental aquarium fish and non-food pet birds only\u003c\/strong\u003e. Veterinarians do use metronidazole for dogs and cats (for giardia, IBD, and some infections), but the right amount depends on the animal's weight and the format differs from a fish tablet. \u003cstrong\u003eDo not give Fix Zole to a dog or cat without a licensed veterinarian\u003c\/strong\u003e confirming the diagnosis and the correct amount. Fix Zole is also not for chickens, ducks, or other food-producing birds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003chr\u003e\n\u003c\/div\u003e","brand":"Aqua Soma Labs","offers":[{"title":"250-mg (60 Count)","offer_id":50744371085551,"sku":"267844","price":41.99,"currency_code":"USD","in_stock":true},{"title":"500-mg (60 Count)","offer_id":50744371118319,"sku":"029854","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0838\/2296\/9071\/files\/fish-zole-metronidazole-250mg-60-count-fish-antibacterial.webp?v=1789229502","url":"https:\/\/myfishmox.com\/products\/fish-zole","provider":"My Fish Mox","version":"1.0","type":"link"}