EcoFix is a powerful natural combination of five bacteria strains to efficiently degrade dead algae and sludge in pond while maintaining healthy and clean pond water. It contains natural active ingredients to break down fish waste and consume pond sludge. It breaks down dead algae and digests leaves and grass clippings, helping to reduce overall pond maintenance. Use twice a week for two weeks for initial dose, quick clean up and end of season, and once every other week for maintenance.