BIOPOND 40 Packets - Natural and Biological Water Treatment Solutions for Ponds, Lakes, Aquatic, KOI Ponds -- FAST RESULT! Clears Water Naturally by Removing Excess Nutrients using Breakthrough Concentrated Formula of Beneficial Microbes Reduces Phosphorus, Nitrogen and Organic Wastes. Reduces Hydrogen Sulfide and Methane gas odor Reduces Water Salinity, COD, BOD. Binds Phosphate and Improve Water Quality. Helps create a BALANCED ECOsystem. Super Easy To Use Water Soluble Packet. Included 40 packets (20 lb) treats 1 acre pond for 1 year. Safe for Fish, Pets, Birds, Livestock, Plants and Wildlife. OTHER BUCKET SIZES ARE AVAILABLE.