1 gallon treats up to _ acre for up to 3 months Aquascape Lake Bacteria restores the ecosystem in lakes and large ponds, keeping water clean, clear, and healthy. This specially formulated treatment contains vigorous probiotic strains and prebiotics that rapidly go to work in the water column, significantly reducing maintenance and enhancing water quality. Aquascape Lake Bacteria will not cause the "floating sawdust" effect often seen with other lake bacteria treatments. This treatment is for lake and large pond use only and may cause issues in small enclosed systems. Safe for fish, plants, and animals when used as directed.