Fish Zole (Fix Zole) 250/500mg 60ct

Fix Zole (Fish Zole) Metronidazole Tablets, Fish & Bird Antibacterial 250 mg / 500 mg On this page: Overview Fish Zole vs Fix Zole Benefits Usage & Instructions How It Works Safety Shipping & Returns FAQ Fix Zole at a Glance For Ornamental aquarium fish & non-food pet birds Helps with Internal parasites and protozoan flagellates such as Hexamita and Spironucleus Form Tablets, 250 mg or 500 mg each Count sizes 60-count bottles Water type Freshwater or saltwater treatment tanks Made in United States by Aqua Soma Labs Fix Zole is a metronidazole antibacterial treatment in tablet form for ornamental aquarium fish and non-food pet birds. Each tablet supplies 250 mg or 500 mg of metronidazole, made in the United States by Aqua Soma Labs. Hobbyists reach for it to help manage suspected protozoan problems, usually in a hospital or quarantine tank where dosing and observation are easier to control. Aquarists 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. Hobbyists use Fix Zole to help manage internal parasites and intestinal flagellates (protozoan flagellates) such as Hexamita and Spironucleus. These can show up in several ways in certain freshwater fish, from feeding and behavior changes to visible physical signs (see the symptom list below). Many keepers prefer treating in a hospital tank or quarantine setup for easier observation and control. Metronidazole works against certain protozoa and anaerobic organisms. When used as directed, it can be part of a broader care plan that also includes stable water quality, reduced stress, and good nutrition. It is not intended for ich or flukes, and it is not a first choice for typical fin rot unless a professional has confirmed the cause. Fix Zole from Aqua Soma Labs delivers 250 mg or 500 mg metronidazole per tablet in 60-count bottles with fresh expiration dates. Pick the strength that matches your tank size and treatment plan, with no splitting or measuring. You can pre-dissolve a tablet in a small cup of aquarium water before adding it to a treatment tank, which helps it spread evenly. Use 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. Fish-Specific Symptoms Loss of appetite, gradual weight loss White stringy droppings "Hole-in-the-head" lesions (pits on head and lateral line) Malawi bloat (cichlid bloat), swollen abdomen Faded color, darkening, or body discoloration Lethargy, hiding, reduced activity Sudden death in cichlids and discus (Hexamita / Spironucleus) Bird-Specific Symptoms (Under Avian Vet Guidance) Yellow plaques in throat or crop (canker / trichomonosis) Pigeon canker, especially in racing pigeons Frounce in raptors (falcons, hawks, owls) Loose or watery droppings (possible giardia) Reduced appetite, weight loss Difficulty swallowing or visible discomfort when eating Fluffed-up feathers, lethargy Supporting 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. Order online: Fix Zole ships from our U.S. warehouse the same business day. Important Notice: This product is intended for aquarium and ornamental fish and pet birds only. It is not for animals used for food. Fish Zole vs Fix Zole: What Changed? If 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: Same as Fish Zole, Fish Zole Forte, and Aqua-Zole Fix 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. New Manufacturer Produced 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. Same 60-Count Bottles Each bottle contains 60 tablets, the same count hobbyists expect. Choose 250 mg or 500 mg to match your tank size and treatment plan. Updated Packaging, Same Formula The label and brand name are new. The metronidazole inside is the same formula the hobby has used for years. Benefits of Fix Zole for Fish & Birds Targeted Protozoan Support Commonly 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. Stocked and Ready to Ship Fix 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. Avian Vet-Guided Option In 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. Flexible 250 mg or 500 mg per Tablet Choose the strength that fits your setup and plan. A consistent mg per tablet (in 60-count bottles) lets you scale the dose across different tank sizes or care routines. Ideal for Hospital Tanks and Quarantine Many 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. Fits a Complete Care Plan Treatment alone rarely fixes the problem. The best results come when you also keep the temperature stable, the water clean, stress low, and feeding appropriate. Targeted, Not a One-Size-Fits-All Remedy Fix 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. Usage Guidelines & Instructions Directions for Use: Set Up a Separate Treatment Area Move 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. Directions for Fish Aquariums You may pre-dissolve the tablet in a small cup of aquarium water, then distribute it evenly across the fish tank you are treating: 250 mg: Add one 250 mg tablet per 10 gallons (38 L) of water. 500 mg: Add one 500 mg tablet per 20 gallons (76 L) of water. Repeat the dose every 24 hours, performing a partial water change between treatments. Filter Adjustments Remove activated carbon or other chemical filtration media during treatment and keep good aeration running, since carbon can reduce metronidazole availability in the water. Continue Treatment and Monitor Results Continue daily treatment for 5 to 10 days (do not exceed 10 days). If there is no improvement within 5 days, discontinue treatment and consult an aquatic professional. Use in Pet Birds (Under Veterinary Guidance) Only 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. Fix Zole Amounts by Aquarium Size Tank volume Metronidazole per use 250 mg tablets 500 mg tablets 10 gallons (38 L) 250 mg 1 n/a 20 gallons (76 L) 500 mg 2 1 30 gallons (114 L) 750 mg 3 1 + one 250 mg 40 gallons (151 L) 1000 mg 4 2 55 gallons (208 L) about 1375 mg 5 to 6 3 These 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. What to Expect During Treatment Days 1 to 2 Fish may hide or eat less while the treatment takes hold. This is normal early on. Keep dosing on schedule and keep aeration strong. Days 3 to 5 Look 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. Days 5 to 10 Even 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. What You Need Before You Start Get these ready before the first dose: A separate hospital or quarantine tank, so you are not treating the whole display. A heater and an air stone or sponge filter for steady temperature and strong aeration. An ammonia and nitrite test kit to keep tabs on water quality. A dechlorinator for the water changes between doses. A small net and a clean cup for gentle transfer and pre-dissolving the tablet. Pro Tip: 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. How Fix Zole Works Fix 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. Each 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. Safety and Tank Notes When 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. Fish Possible 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. Birds Use 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. Invertebrates Sensitivity 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. Safe Use in Your System Do 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. Storage & Handling Store at controlled room temperature of 59 to 86 F (15 to 30 C) 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. Important Safety Warning Fix Zole is intended for ornamental aquarium fish and non-food pet birds only. It is not for animals raised for food. Always follow label directions. Shipping & Returns Shipping Policy: 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 shipping policy. Refund Policy: 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 refund policy carefully. Frequently Asked Questions What is Fix Zole used for in aquarium fish and pet birds? Fix 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). What is in Fix Zole? Fix Zole contains metronidazole at 250 mg or 500 mg per tablet. Metronidazole works against certain protozoa, such as Hexamita and Spironucleus, and against anaerobic organisms, which is why hobbyists reach for it with suspected flagellate problems rather than ich or flukes. What does metronidazole treat in fish? In 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. Is Fix Zole the same as Fish Zole or Fish Zole Forte? Fix Zole contains the same active ingredient 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. Is Fix Zole the same as Aqua-Zole by Aqua Soma Labs? Yes. 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 active ingredient, strength, and intended use remain the same; only the brand name and packaging have been updated. Will Fix Zole harm my tank's biological filter? Metronidazole 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. How do I choose 250 mg vs 500 mg tablets? Pick by water volume, not by how sick the fish looks. The label-style guide is one 250 mg tablet per 10 gallons (38 L) or one 500 mg tablet per 20 gallons (76 L), so the 500 mg simply covers a larger tank with fewer tablets. Pre-dissolve in tank water, or, if a vet directs it for a specific case, mix into fish food. Do not pick a strength by guessing severity. Can I give Fix Zole to my dog or cat? Fix Zole is labeled for ornamental aquarium fish and non-food pet birds only. 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. Do not give Fix Zole to a dog or cat without a licensed veterinarian confirming the diagnosis and the correct amount. Does metronidazole help with hole-in-the-head symptoms? Metronidazole is commonly used when hole-in-the-head type signs and white stringy poop are suspected to be linked to protozoan flagellates (such as Hexamita or Spironucleus). Not all cases have the same cause, so stable water quality, nutrition, and diagnosis matter just as much as treatment. Will Fix Zole treat ich (white spot) or gill flukes? No. Metronidazole is not typically used for ich (white spot) or gill flukes. If symptoms suggest ich or flukes, choose a treatment that targets those parasites instead of using an antibacterial treatment. Can Fix Zole treat fin rot or other bacterial infections? Metronidazole is mainly chosen for certain protozoan concerns and anaerobic-sensitive issues. It is not a first choice for typical fin rot unless a professional has confirmed the suspected cause and recommended metronidazole as part of a plan. Can I use Fix Zole to prevent infections or as routine prevention? No. Fix Zole is intended for active, suspected, or confirmed issues, not routine prevention. Unnecessary use can add stress for fish and can contribute to resistance over time. How long should I treat with Fix Zole? Many hobbyists follow daily dosing for 5 to 10 days (do not exceed 10 days). If there is no improvement within 5 days, discontinue treatment and consult an aquatic professional to confirm the cause and next steps. How much metronidazole do I use per gallon, and how do I mix it? The standard metronidazole for fish guideline is 250 mg per 10 gallons (38 L) of water, roughly 25 mg per gallon, or 500 mg per 20 gallons (76 L). Pre-dissolve the tablet in a small cup of tank water, then spread it evenly around the treatment tank. Dose by water volume, not by the number of fish, and repeat every 24 hours with a partial water change between doses. The chart above lists common tank sizes. Is Fix Zole safe in saltwater tanks? Yes. Dosing goes by water volume, so metronidazole works the same in a freshwater or saltwater treatment tank. Treat in a hospital tank where you can, so monitoring is easier and sensitive animals in the display stay out of it. Is Fix Zole reef-safe or safe with shrimp and snails? Play it safe. Sensitivity differs by species, so do not dose a display tank that holds shrimp, snails, corals, or other invertebrates. Treat the affected fish in a separate hospital tank instead. Can I combine Fix Zole with other treatments? Avoid mixing treatments unless advised by an aquatic or avian professional. Remove activated carbon and other chemical filtration media during treatment, turn off UV sterilizers, maintain strong aeration, and monitor ammonia and nitrite. How do I administer metronidazole to pet birds? Only give metronidazole to non-food pet birds under avian veterinary guidance. Your vet should confirm the diagnosis and provide the correct amount for the bird's weight, frequency, and duration. Never guess bird amounts or add tablets to communal drinking water without professional direction. How soon should I see improvement with Fix Zole? Many keepers start to look for small changes by day 3 to 5, such as appetite returning, droppings looking more normal, and steadier activity. If nothing has changed by day 5, or the fish look worse, stop and ask an aquatic veterinarian rather than extending treatment on your own. Where can I buy metronidazole for fish online? If you are wondering where to buy metronidazole for fish, you can order Fix Zole (metronidazole) directly from Fine Pet Health. Orders ship from our U.S. warehouse the same business day via USPS or UPS. Browse Fish & Bird Treatments → More Fish & Bird Treatments Fix Mox (Amoxicillin) 250/500mg A treatment for fin rot, dropsy, ulcers, and other bacterial infections in ornamental fish. 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