Review on 1-Gallon Bottle of API POND ECOFIX SLUDGE DESTROYER – Pond Water Clarifier and Sludge Remover Treatment (147C) by Kristen Moore

I have a small pond (20 x 30 x 3 ft) with a pump and strainer but I have not been able to clear the cloudiness. One treatment with this product cleaned up the pond and after a few months it is still fine. I expect to have to use it again after the leaves fall. I have some 6 inch goldfish in my pond so they don't poop like koi; I don't know how it will work with koi. This is the only clarifier I have been able to find that is non-toxic to fish.