Aquascape Alkalinity Booster with Phosphate Binder effectively increases overall KH and alkalinity. Aquascape Alkalinity Booster is lab tested, pharmaceutical grade, and dissolves completely and easily in pond water, making application simple and easy. A phosphate binder is added to help reduce algae growth, reducing maintenance throughout the year. The treatment is phosphate and ammonia free and one scoop treats 125 gallons of water. One full container treats 5,000 gallons of water.