API POND-ZYME SLUDGE DESTROYER Pond Cleaner With Natural Pond Bacteria And Barley, 1-Pound ContainerUse twice a week for two weeks in ornamental ponds for start up, end of season, then once every two weeks for regular maintenance Helps to reduce overall pond maintenance and keep pond clean Breaks down dead algae and digests leaves and grass clippings Contains natural active ingredients to break down fish waste and consume pond sludge Contains one (1) API POND ZYME SLUDGE DESTROYER Pond Cleaner With Natural Pond Bacteria And Barley, 1 Pound Container