Crystal Blue Pond Booster - Royal Blue Pond Dye & Bacteria Combo - 1 Gallon 2 in 1, Contains Royal Blue Pond Dye & Natural Pond Cleaning Bacteria 100% safe for humans, fish, livestock, pets, birds, swimming, potable water and irrigation 1 gallon treats 1 surface acre, 4 - 6 feet deep Maintains color and clarity all year long. Helps settle out dissolved solids Helps break down dead leaves and weeds on the pond floor