Review on ACCU-CLEAR Water Clarifier for Freshwater Aquariums - Quickly Clears Cloudy Water, Ideal for Weekly Use by Christin Ridder

I've had the tank running for several months now with no problems. I bought API Accu Clear because I wanted crystal clear water in my aquarium. The water has cleared; However, in less than a day, several cardinal tetras "disappeared". I later found them in the substrate - dead. Correlation does not equal causation so I tried Accu Clear again a few weeks later with the same results. I haven't used it since and all my remaining tetras have been fine. I love API products but only buy Accu Clear if you prefer clear water to live fish. Update: No problems after stopping using this product.