API Pond Melafix for Bacterial Infections in Fish, 16-oz bottle - Chewy.com

API Pond Melafix for Bacterial Infections in Fish

Rated 4.5 out of 5 stars

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$15.98Chewy Price
$22.28Chewy Price
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About This Item


  • Formulated to help koi and goldfish fight bacterial infections.
  • Natural antibacterial treatment is designed safe to use in water with plants and invertebrates.
  • The perfect way to protect your finned friends when adding new fish to the pond.
  • Designed to heal open wounds and help regrow fins.
  • Treats eye cloud, mouth fungus and tail and fin rot.

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Questions & Answers

5 Customer Questions

Can the melafix pond be used in aquariums or does the other come in a larger size. I have 9 tanks
Answer by ChewyDec 02, 2019
Pond Melafix can be used in aquariums, however, API recommend turning off protein skimmers and UV sterilisers when using it.

My ponds has salt in it 2 days ago can I add melafix in? Is it safe for my koi?
Answer by ChewyFeb 27, 2021
API MELAFIX will work in both freshwater and saltwater aquariums. However, we recommend turning off protein skimmers and UV sterilizers when using it. If you have carbon in your filter, this should be removed before using Melafix. API MELAFIX is safe for delicate fish species, all marine fish, and reef aquariums.

Does this cure pop eye.
Answer by ChewyOct 23, 2020
Melafix effectively treats fish diseases like tail and fin rot, eye cloud and mouth fungus.

Will this hurt the local wildlife that drink from the pond?
Answer by ChewyJun 25, 2019
This product is safe for snails, aquatic plants and other wildlife.

ReviewsWrite a Review

Rated 4.5 out of 5 stars
14 Reviews
Would recommend to a friend

14 Customer Reviews

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Rated 5 out of 5 stars
By sweetkittylover on Jun 9, 2022

Fast fish fix

If something goes wrong with your pond fish this fixes things right up

Rated 1 out of 5 stars
By Cheryl on Jun 18, 2021

Did nothing

Waste of money. Did nothing. Lost a koi to fin rot treated pond for 7 days And way too much money No results. So I used Proform C and great results everyone is back to their old self

Rated 5 out of 5 stars
By APIProducts on Aug 25, 2020

API Pond Melafix

This product worked really well in my pond and all the fish look more colorful and healthy.

Rated 4 out of 5 stars
By Mulligan on Apr 8, 2020

Easy To Use Antibiotic Treatment For MyPond

This product is very easy to use, but it really creates a lot of foam. The foam is very slow to disappear. I don’t know yet if it will be effective in treating loss of scales on one of my koi. A small amount of this product goes a long way.

Rated 4 out of 5 stars
By Bruce on Nov 16, 2019

It's Natural (no chemicals)!

Simply put- it works. If your fish look sick then treat your tank (pond in my case) by putting this in the water at recommended dosages. Follow the instructions and voila! Good for general issues. I use it (with Pimafix) when my fish look stressed to stop an infection before it gets started or worse.

Rated 5 out of 5 stars
By Nickel on Jul 31, 2019

Worked well!

This product help cure my over 1k gallon pond within a week, takes more than one bottle of course. Started seeing progress within three days of treatment.

Rated 5 out of 5 stars
By Bandit on Aug 20, 2019

Happy fish

Use it all the time .... have happy healthy fish, keeps water clear I use there other products to.

Rated 5 out of 5 stars
By Yummy on Oct 27, 2018

My Ponds Treatments

I have 4 ponds and I have found all the koi and other fish treatments on Chewy.com. I found these products that I use are offered in different sizes and the prices are so much less on Chewy. A big plus, they’re delivered quickly to my door.

Rated 5 out of 5 stars
By James on Aug 14, 2018

On the mend

We have some old goldfish in a 500 gallon pond. Some started getting tail rott. We ordered this and it was to our door in less than 36 hours at a great price. We used as recommended and the fish are already showing great improvement !

Rated 4 out of 5 stars
By pondgirl01 on Jun 6, 2018

Great Product

Used the Melafix for a large goldfish with a sore near the eye, within 2 days I could tell a huge difference.