Cisbay BIOPOND 0.5 lb Bag - 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 Ammonia, Nitrate, Nitrite, Phosphorus, COD and BOD. Improve Water Quality. Reduces Toxic Blue-green Algae, Hydrogen Sulfide, Odors and Organic Wastes. Safe for Fish, Pets, Birds, Livestock, Plants and Wildlife. Helps create a BALANCED Ecosystem. Super Easy To Use Water Soluble Packet. Included 1 bag (0.5 lb packet). Bucket Sizes available. Made in USA.