Aqueon Water Clarifier removes the particles that make your aquarium water look cloudy and murky. It clings to suspended dirt and debris allowing them to be filtered out or sink to the bottom of the tank for easy removal. Quickly clears cloudy water Safe for all fish and plants For freshwater aquariums Once the water in your tank is clear clean or replace filter media. Follow all directions on the bottle for a clear beautiful tank! Made in the USA.