American Pond Brand Super Strength Dry Bacteria and Enzyme Pond Water Treatment is scientifically blended and tested to ensure maximum results in water gardens. This super strength formula is designed for most subborn water quality problems, especially high ammonia levles or water clarity issues. Beneficial pro-biotic microbes that work in symphony to reduce sludge, fish waste, and other excess nutrients that cause poor water quality and clarity. Contains over 5.2 billion colony-forming units per gram. 16 oz bottle treats 96,000 gallons.