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🌿 Heal your fish, protect your aquatic world — naturally and fast!
API Melafix is a 1.87-litre liquid remedy formulated with natural tea tree extract to treat bacterial infections, damaged fins, ulcers, and open wounds in freshwater fish. Designed for both treatment and prevention, it promotes rapid healing and reduces disease risk in new fish introductions. Trusted by thousands of aquarium owners, it delivers visible results within days, ensuring a healthier, more vibrant aquatic environment.













| ASIN | B00026041M |
| Best Sellers Rank | 1,439 in Pet Supplies ( See Top 100 in Pet Supplies ) 2 in Prescription Aquatic Animal Medications |
| Brand | API |
| Brand Name | API |
| Country Of Origin | USA |
| Customer Reviews | 4.5 out of 5 stars 11,344 Reviews |
| Global Trade Identification Number | 00317163160114 |
| Item Form | Liquid |
| Item Weight | 64 Ounces |
| Item form | Liquid |
| Item weight | 64 Ounces |
| Liquid Volume | 64 Fluid Ounces |
| Liquid volume | 64 Fluid Ounces |
| Manufacturer | API |
| Manufacturer Part Number | 11P |
| Model Number | 11P |
| Number of Items | 1 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 317163160114 317163416112 |
| Unit Count | 1870.0 millilitre |
| Unit count | 1870.0 millilitre |
N**E
From lifeless to spring chicken - read my review and view images
Our fish was showing signs of septicaemia with blood spots, scales peeling away, very lethargic, not eating and fins that looked damaged beyond repair, so after a full tank change with 24 hour settled water, all plants removed to prevent further damage from brushing past, I followed a set routine of daily treatment using this treatment, within 2 days she became more active, and obvious signs of repair were visible, blood spots were disappearing and her fins were slowly starting to move more freely. It’s been 10 days and apart from the damaged scales on her side that are still healing, she’s back to herself, swimming, begging for food every time she sees anyone, safe to say my son is super happy that he’s not got to say goodbye to pepper just yet. Can’t recommend this product enough, well worth the money, the size was plenty for what I needed, but I’ll just continue to use it bi daily for the next few weeks to ensure that it is fully treated and doesn’t come back. And because she’s eating again equivalent to a St Bernard ( if we let her ) there’s less debris in the tank so the tank has stayed clearer. Also I’ve just noted that pre treatment her back was arched and looked so poorly, today she’s back straight, able to buoyant herself easily. I have attached pictures from day 1 to day 10 to show the difference. Absolutely superb result.
K**E
Definitely helped my poorly fish .
Bought this in hopes it would help my young Koi that just hasn’t been well since it was gifted to me 3 months ago . I had no idea what was wrong & we have no aquatic vet close by so after googling symptoms in great detail & doing some research it kept coming back as bacterial infection. I’ve had my other fish 20+ years & never had to use any chemicals in my pond or treat any of my fish .. Decided to give melafix a go & im really glad I did . I isolated him in a tank & im currently on day 6 of the treatment . He’d been bottom sitting in my pond for weeks , he’d never come up for food at feeding time & he spent 24 hours a day hiding behind my pond plants . As you can see in the video I took yesterday he’s now swimming around perfectly normal & happy , Ive been using koi flakes to feed him whilst he’s in the tank (usually use MediKoi) & it’s the first time I’ve seen him eat since he fell ill . The melafix also cleared up a red bloodshot patch he’d got underneath his body within the first dose of treatment . He’s not stopped swimming around & playing with the bubbles from the air stones 😂 I’ll be gutted when I have to put him back in the pond . I’d definitely recommend this stuff . I thought I was gonna lose my fish he was so lethargic & unwell but it took just 3 days of this stuff & I saw positive signs . Just to add , it did make the water go incredibly cloudy and my koi did start rubbing a bit against the airstones which can be a side effect to using melafix . I did a 25% water change and added 2 tablespoons spoons of pond salt , this helped with any irritation / stress .
R**L
Fish item
Great delivery and item is always good
A**T
Product Works ok
Good product, smaller than expected
A**R
Works Wonders
I had a Problem with my Oranda, where glazed eyes were noticed last week! Looked like a little mold was forming! Did the usual 40% water change, then added 2 doses of Mella Fix and over the week, ALL CLEAR! Great stuff this! Panic over! Fast delivery, we'll packaged thanks!
A**.
Does what it says
Reliable product
S**R
Great thank you
Great thank you
P**8
Be careful with Melafix
Be careful when using Melafix in your pond. I have Sturgeon 4ft 6in. It said it is safe for all pond fish. My Sturgeon almost died. I had to quickly do a water change, spray them with a hosepipe. Extra air stones. They have not yet fully recovered.
A**O
Creo que cumple su función
Parece que el tratamiento es efectivo, no soy veterinario y si mueren mis peces puede ser por otros agentes o causas. En cualquier caso tener este producto y aplicarlo a mis peces me da una tranquilidad
S**A
Ottimo prodotto
OrdinatO di nuovo
U**V
Perfect ! Just buy it and see the magic
I am a veteran in this hobby so this review would definitely help you in saving your fish from critical condition (whenever you read ) . I recently set up a 75g cichlid community tank . After a few days I observed two of my Oscars had white spots and two parrots were having swim bladder. I had given up on my fishes after raising temperature,feeding green peas and adding salt to the tank .I had read alot about this product and decided to give it a try . After adding this continuously for two days I saw instant changes in my tank . Though one of my parrot died but I was able to save all of them . Though costly I merged it with api pimafix and saved my fished . Now I have 7 Oscars 4 parrots 2 gt all happily set up . Kudos Amazon and api
A**Z
Five Stars
fonctionne très bien, mon poisson rouge avait les yeux blancs, et ça l'a guérit
E**.
Love this ❤️
Been using this for my aquarium 👍🏼
Trustpilot
2 weeks ago
1 month ago