

🌿 Heal your fish, protect your tank — naturally and effortlessly!
API MELAFIX is a 16-ounce freshwater fish bacterial infection remedy featuring natural tea tree extract that heals damaged fins, ulcers, and open wounds within 7 days. It supports aquarium health by maintaining water clarity and pH balance, making it ideal for treating infections and preventing disease in new fish. Trusted by aquarists for over 50 years, it’s a safe, effective solution to keep your freshwater community thriving.



















| Customer Reviews | 4.6 out of 5 stars 6,945 Reviews |
D**.
Natural cure for fish bacterial infections
API Melafix is a reliable treatment for healing damaged fins and small wounds in freshwater fish. Its tea tree extract formula helps fish recover quickly without disturbing the tank balance. It’s easy to use and keeps the water clear. The herbal scent is a bit strong at first but fades soon after. Follow the manufacturer’s directions carefully and keep it out of reach of children or pets.
R**Y
Works great and does not hurt fish or eels 👍🏻👍🏻👍🏻👍🏻
Absolutely excellent for our aquarium👍🏻
J**A
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.
E**S
Works wonders and saved our angle fish.
This medicine worked amazing for our angle fish that had ick. Within 3 days we saw it clear up. We completed the 7 day course and he is all better. He did loose his appetite for about 2 days which is what they said could happen. But he is back to his normal self and we are so happy!
B**.
Works perfecty but there was a leakage in the shipping box.
The bottle cap was not fully tightened thus there was a leakage in the package during delivery otherwise it works perfectly as described. Would get it again, hopefully no leakage next time hehe
N**Y
Melafix
Always a great produced. Been ordering this online for years. Cheaper than in store and same Great quality.
C**Z
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.
M**R
Popeye For Fish
Woke up and noticed one of our goldfish eyes was like a balloon. Ordered this for same day delivery, it came in around 5PM. Added to our tank right away. Next morning the eye is 75% better! Amazing!
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