Pond Logic Pond Dye PLUS combines our color enhancing pond dyes with water clarifying Liquid PondClear beneficial bacteria for the ultimate 1-2 punch. Beautify and protect your pond from troublesome UV sunlight with long-lasting natural shades of Pond Dye while eliminating suspended organic debris that contribute to cloudy water, muck accumulation and weed growth. Nature's Blue is the ideal color for decorative ponds as it contrasts perfectly with lush green landscaping. Safe for swimming, fishing, wildlife and domestic animals. 1 Gallon treats up to 1 acre with an average depth of 4-6 feet deep. Apply once every 4-6 weeks or as needed.