Our proprietary pond bacteria formulation contains a blend of beneficial pond bacteria that can perform in water temperatures as high as 110 F, and as low as 35 F. This liquid formulation contains a high concentration of beneficial bacteria (200 billion CFU/gallon). It will naturally eliminate murky water, bottom-sludge (much), excess fish food, fish wastes, odors, problem nutrients (such as nitrate and phosphate), and toxins (such as ammonia and nitrite).