API MELAFIX Freshwater Fish Bacterial Infection Remedy 64-Ounce Bottle
Original price was: $52.66.$49.99Current price is: $49.99.





Price: $52.66 - $49.99
(as of Oct 06, 2025 11:31:41 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 antibacterial 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 almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too.
Is Discontinued By Manufacturer : No
Product Dimensions : 5 x 2 x 12 inches; 4 Pounds
Item model number : 11P
Department : Unisex-Adult
Date First Available : June 20, 2004
Manufacturer : Mars Fishcare
ASIN : B00026041M
Best Sellers Rank: #61,537 in Pet Supplies (See Top 100 in Pet Supplies) #35 in Fish Medication & Health Supplies
Customer Reviews: 4.6 4.6 out of 5 stars 322 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 64-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
Customers say
Customers find the water treatment effective, particularly for African cichlids and fungal infections, and consider it well worth the money. The product comes in a convenient size, with one customer noting it requires only one teaspoon for 50 gallons instead of 10. Opinions are mixed regarding toxicity, with some customers reporting their fish become stressed when using it.
8 reviews for API MELAFIX Freshwater Fish Bacterial Infection Remedy 64-Ounce Bottle
Add a review
Original price was: $52.66.$49.99Current price is: $49.99.
Sam –
Good value, plant safe.
The large size is a better value. This product is a good fish safe, I believe it is nontoxic, and works well in a planted aquarium.
Kyle B. –
This is good stuff
If you have a large tank with multiple fish needing treatment this is it. I was able to treat a 120gal tank and all the fish are back to being healthy.
Mindy –
Great medicne for all kinds of fish
This medicine really helps get rid of and even prevent ich for me. I have a goldfish tank and getting new ones can be hard because it’s not uncommon for them to already have ich or have been exposed to it while in the store. Treating with this when adding new fish can help stop an out brake. Recently I have had both my freshwater and my goldfish tank get ich from new fish after a doing a full daily treatment for 2-3 days I noticed the ich reduced if not disappear all together, then I do a small water change and treat with a little lower dose for several more days. You do have to be careful not to overdose as this can cause fish to die by putting the tank to much out of balance or just from plain over medicating them. It’s also not a bad idea to add a little stress coat when treating for ich as ich causes damage to the fish’s protective coating.This medicine also helps heal torn and tatered fins and tails.
T –
Smell is fine, kind of refreshing plus I new it was …
This and Pimafix, combined with Medi Koi food at the end, saved my koi. I had fin rot on almost 50 fish, stressed out by unusually hot weather this spring. I never had issues with diseases all these years. My pond is dialed in. But thist came on quick and sudden. I have a 16,000 gal pond, so netting the fish is not an option. I used 64 oz of Melafix and 128oz of Pimafix every 3 or 4 days for a total of 4 treatments each. Water foamed slightly with waterfall and aerator but nothing major. Smell is fine, kind of refreshing plus I new it was there and working. I was able to catch a very sick, 16″ fish. I treated him in a small 30 gallon holding tank for 10 minutes following the instructions on the bottle. He was near death but came back out of it and looks good today.I made sure to keep a gallon each on hand and I may add this to the pond every spring now that I’m paranoid.
Adam –
Four Stars
This particular one turns my water white
Snail –
It’s Melafix. It does what Melafix does.
Melafix isn’t a medication so much as the fish equivalent of chicken soup (for serious illnesses you should look for real antibiotics, fungicides, etc), but it really helps with recovery and being able to buy in bulk is nice. It helped my goldfish heal up after a series of unfortunate incidents including fin rot and scraping up their whole side jumping out of a hospital tank. Also, it doesn’t hurt my snails. The foaming is normal, so don’t panic if you see that. Yes, even that much foaming. If you use as directed and NEVER administer Melafix to anabantoids (fish with labyrinth organs, e.g. bettas and gouramis), you’ll find it’s a very useful thing to have on hand just in case.(When treating your fish for an illness, always remember that the key to helping them recover and keeping them healthy afterwards is to maintain good water quality! All the treatments in the world won’t fix a poorly maintained tank.)
Mitchell Hawley –
Good stuff
I always use this would highly recommend
Ga. Customer –
Fast delivery !
Always used in my koi pond. Have gotten older and had pond filled in so don’t need anymore.