Dymax Instant Bactereum 300mlRapidly Breakdown Organic Waste and Remove Nitrite & Nitrate.Breakdown organic wasteEliminates ammoniaRemove nitrite & nitrateDetoxify waterProvide water clarityInstant Bactereum effectively and rapidly establish biological system in the aquarium filtration. It is a good or beneficial bacteria formulated specifically to establish biological filtration not only in new aquarium set-ups, but also to enhance the rate of nitrification, denitrification and organic waste degradation in the aquaria through complete nutrient remineralization.This product is highly effective even for big fish keeping, over crowding keeping or high bio load keeping that can rapidly breakdown organic waste, removing ammonia, nitrite, nitrate and organic carbon in all ecosystems providing a good water clarity and quality for the aquarium.