Pond Keeper Phosphate Binder Plus offers natural phosphate control for ponds with high phosphate levels by naturally binding problem causing phosphates and rendering them inactive. The product provides a 100% all natural replacement for aluminum sulfate! Pond Keeper Phosphate Binder Plus provides the following benefits: * Controls problem causing phosphates * Helps buffer the pH of the pond water * Adds beneficial trace minerals * Assists in the reduction of ammonia * Provides minor settling of mud and clay, enhancing overall water clarity APPLICATIONS KOI PONDS/ WATER GARDENS: Apply 2 ounces (2 scoops) per 1000 gallons of pond water. LARGER PONDS/ LAKES: Apply 85 lbs per million gallons of pond water.