Fritz Aquatics 360 Freshwater Aquarium CleanerFritzZyme 360 is a powerful probiotic blend of naturally occurring, environmentally friendly, live heterotrophic bacteria capable of digesting organic sludge common in aquariums. Sludge includes fish waste, leftover food, and other decaying organic matter. Using FritzZyme 360 as part of a regular maintenance program will greatly reduce aquarium care including gravel vacuuming, water changes as well as prolonging filter media life. Promotes a clean,