API Pondcare Microbial Algae Clean Green Water Biological Inhibitor

Rated 3.6 out of 5 stars


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$67.40Chewy Price
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Total Price: $152.26

About This Item


  • Helps control green water algae for clearer pond water and water gardens housing live plants and fish.
  • Formulated to help remove potentially dangerous debris, organic sludge and pond odors.
  • Serves as an excellent alternative approach to algae control.
  • Registered with the Environmental Protection Agency (EPA) for a solution you can trust.
  • Available in three sizes—a 16-oz bottle, a 64-oz bottle and a 1-gallon bottle.

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Questions & Answers

4 Customer Questions

Does this contain bacteria and algaecide? Can I use this product instead of Algaefix? Also, if I use this *with* Algaefix, will that overdose the tank?
Answer by ChewySep 08, 2020
Microbial Algae Clean is a bacterial supplement and Algaefix is an algaecide. They can used together with no adverse effects.

My cat and dog sometimes drink out of my pond will this hurt them now?
Answer by ChewyJun 08, 2021
All of API products are safe for outdoor use and if any animal/wildlife comes up for a drink or swim in a treated pond, as long it is dosed accordingly to the directions.

Is this product safe for a bird bath water fountain?
Answer by ChewyJul 05, 2020
This Algae Control is intended to be used in ponds only.

Will this be harmful to domestic pets and wildlife?
Answer by ChewySep 16, 2019
API Pondcare Microbial Algae Clean Green Water Biological Inhibitor is an alternative, all-natural approach to algae control as the first bacterial algaecide registered with the Environmental Protection Agency. This product contains patented bacteria to control green water algae in ponds with live fish and plants, and helps establish and maintain a clean, odor-free and algae-free pond. Microbial Algae Clean promotes a cleaner pond environment by eliminating organic sludge and debris, and will not harm live plants or fish.

ReviewsWrite a Review

Rated 3.6 out of 5 stars
5 Ratings
Would recommend to a friend

5 Customer Reviews

Rated 1 out of 5 stars
By Buzz on Aug 21, 2022

Product expired 5/2022

I have used this product before with success but algae is starting to grow after several applications

Rated 5 out of 5 stars
By katies on Jul 11, 2020

working good so far

we had a terrible algae problem this year. our pond was always crystal clear. once you clean the algae off and this so far after about three weeks it has not come back very happy

Rated 4 out of 5 stars
By Diane on Jun 28, 2020

API Pondcare Microbial Algae Clean Green Water Biological Inhibitor

This is the same algae cleaner we've been using for years. However, this one hasn't lived up to the same ones in the past years. It does ok.

Rated 5 out of 5 stars
By kade on May 17, 2020

Gets rid of the green!

Bought this for a friend - she has the greenest pond I have ever seen - she used this as directed and the fish can be seen for the first time in years!

Rated 3 out of 5 stars
By Granny on Jun 5, 2019


I have a fountain and pond, both with goldfish. I treated the water in both, and had fish jump out of both. The algae is still growing in the fountain, so I am not sure of the effectiveness.