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API MELAFIX Freshwater Fish Bacterial Infection Remedy 16-Ounce Bottle

Original price was: $19.98.Current price is: $14.39.

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Price: $19.98 - $14.39
(as of Nov 08, 2025 23:34:50 UTC – Details)


API MELAFIX Freshwater Fish Bacterial Infection Remedy soothes the transition from store to home by reducing the risk of your fish developing a disease. The fish you bought may already carry a disease. Disease is often difficult to detect, particularly in its early stages. Treat bacterial infections in your fish and reduce the risk of spreading illness to other fish with API MELAFIX Freshwater Fish Bacterial Infection Remedy. Bacterial diseases are caused mostly by dirty aquarium conditions and the addition of infected fish. Fish that are injured and have open wounds are especially susceptible, even in seemingly clean tanks. Bacterial infections, like fin and tail rot, eye cloud, pop eye, body slime and mouth fungus destroy tissue and other organs, and if left untreated, can cause death. API MELAFIX Freshwater Fish Bacterial Infection Remedy is an all-natural treatment that heals open wounds, treats bacterial infections and promotes re-growth of damaged fins and tissue, usually within a week. Just add 5 ml per 10 gallons of aquarium water. It will not adversely affect the biological filter, alter the pH or discolor the water. For effective treatment, dose infected fish daily for 7 days, and continue afterward if necessary. Dose new fish daily for 3 days. Remove activated carbon from filter before use, if possible. With API Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results.
Is Discontinued By Manufacturer ‏ : ‎ No
Product Dimensions ‏ : ‎ 5 x 2 x 12 inches; 1 Pounds
Item model number ‏ : ‎ 11J
Date First Available ‏ : ‎ June 20, 2004
Manufacturer ‏ : ‎ Mars Fishcare
ASIN ‏ : ‎ B0002567T6
Best Sellers Rank: #2,787 in Pet Supplies (See Top 100 in Pet Supplies) #10 in Aquarium Water Treatments
Customer Reviews: 4.6 4.6 out of 5 stars 6,818 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

Contains one (1) API MELAFIX Freshwater Fish Bacterial Infection Remedy 16-Ounce Bottle
Heals bacterial infections and repairs damaged fins, ulcers and open wounds
Contains natural, botanical tea tree extract to quickly and rapidly help fish
Helps treat newly-introduced fish to reduce risk of disease outbreak in freshwater aquariums
Use daily for a week when treating infections and for 3 days as a preventive when adding new fish
Not for human consumption or for the treatment of fish intended for human consumption. Keep out of the reach of children. For aquarium use only.

Customers say

Customers find the water treatment effective, particularly for fin rot and bacterial infections, and appreciate its quality and value for money. The product receives positive feedback for its smell and health benefits, with one customer noting it’s great for overall aquarium health. Regarding water clarity, some customers report it clears cloudy eyes while others say it makes the water murky. Safety concerns exist, with some customers warning it’s not safe for snails and shrimp, while others consider it safe for aquarium use.

13 reviews for API MELAFIX Freshwater Fish Bacterial Infection Remedy 16-Ounce Bottle

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  1. Lois

    API is a good product!
    Works great and smells good too !

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  2. Jo Ayala

    Helped my beta pop-eye!
    My beta had pop-eye and someone recommended this to me. Cleared up his pop-eye within days. Now, even I change my beta’s water, I always use this product. A little goes a long way and the size of the bottle is relatively big and lasts forever. Comes with clear instructions and it’s easy to use. It’s the only thing I use for my fish tank.

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  3. Giovanni Onorato

    API Melafix
    I have been keeping fish for over 25 years and I love the API products. This API Melafix works great. It is a freshwater fish Bacterial Infection Remedy. It comes in various sizes and when used properly will last a long time. Its a great value for the money and will help with Fungal Infection, Fin and Tail Rot, Dropsy and Malawi Bloat just to name a few. It is clear in color and will not cloud your water. Try it and you will be convinced this is a must have for any fish keeper. Remember to always follow the directions. FIVE STARS !!!

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  4. An Amazon Buyer

    There is nothing better for your fish, and smells great!
    I first bought this product on Amazon in March 2011, I have since bought 16oz once a year till 2013, and then I bought a 64oz, which I stored to long and went bad, but that is on me. I just bought another 16oz again for my 5th time in 2024. I love this stuff, it has saved so many fish of mine over the years. It is not a miracle cure, if a fish is to far gone, it won’t save them. Its great for other fish, put in with new fish, little bit each week just to keep everyone healthy. I have NEVER had it ever harm a fish ever. Though, like with anything, I am sure that potential exists if not used as directed.I really cannot recommend this stuff more, it is the best fish product I have ever bought, it works, its safe 99% of the time, and it smells great, your tank will smell better. I cannot say enough good about this product. If you have fish, you should keep this in stock.

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  5. Nik

    Works well, doesn’t kill plants
    This medication works really well and you need to follow the instructions. It’s great that it didn’t kill my aquatic plants!! It does seem to take a little longer to work with my Cory Cats but this does the job it is advertised to do and has been a life saver for probably 15 years now!

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  6. Cynthia, AZ

    Used for seven years! Plants, fish, snails, crayfish, safe for all things!
    I read reviews before repurchase in case a bad seller or something. I see reviews saying it killed my fish or beware and it’s only as good as the user. I have had close to 20 tanks going at once with all kinds of fish, plants and invertebrates, all kinds. This kills nothing if used properly and providing the right environment for the fish. This means fish get sick because of water quality, improper housing or introducing an infected item into the tank. So one of those are your first problem to correct.So back to introducing this medication into your tank, it will not stain anything or hurt any living thing in your tank. All tanks need a filter or air stone (even bettas/surface breathers) on tanks with lighter agitation Need To Add Oxygen To The Water! This stuff makes the water kind of thicker for lack of a better word. It’s like us walking uphill, adds stress to a sick fish if not given ample oxygen in the water. If you do not correct this, a sick fish will die. My fish will be less active when down to one filter and this stuff, I throw in an extra air stone and their back chasing each other again. Cloudy tanks…lack of proper filtration, too much meds?? Why happen in some tanks and not others? I add mine slowly, giving the fish time to adjust to something new. Another way to think of it, is if you have Cory Catfish in your tank, ten other people have Cory in their tank. We all introduce the medication, yours die, other ten tanks fish are healed, law of averages says the medication is not the problem. Should be listed in description, people obviously don’t just know this. This is my go to for most causes. Also the higher the temp in your tank, the less oxygen provided, so if you turn up the heat make sure the oxygen level is comfortable. Watch your fish whenever introducing something new.I am currently treating my tank with a full dose of Melafix and a full dose of Pimafix. My baby Angelfish, no bigger then a dime are doing just fine.

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  7. Aimee Martineau

    Great product.
    Great product fast shipment

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  8. Otz

    This works
    Cures most fish bacteria. My piranhas cleared right up with this and salt.

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  9. Shishir Shetye

    Best product for best supplier. Sagar Aquarium is best seller on Amazon.

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  10. Vlad

    I cannot comment on the item itself as it is delayed and receipt date was changed several times. The product was used before and it works well.

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  11. Syed Waseem Akram

    Not the same product. Not sure if it’s fake

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  12. Arijit Panda

    Does the work it has been designed too. Must for all aquarium owner.

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  13. Mona AlAmiri

    وصل المنتج مفتوح وفارغ من المحتوى

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    API MELAFIX Freshwater Fish Bacterial Infection Remedy 16-Ounce Bottle
    API MELAFIX Freshwater Fish Bacterial Infection Remedy 16-Ounce Bottle

    Original price was: $19.98.Current price is: $14.39.

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