Cleanse Weekly is a concentrated blend of naturally based enzymes and phosphate remover. It reduces unwanted non-living organic contaminants such as: body oils, cosmetics, suntan lotions, hair products and so much more! Cleanse Weekly reduces scum lines, scrubbing of the waterline, and unpleasant odors. It provides crystal clear, sparkling water with less work. Cleanse Weekly works as a continuous cartridge filter cleaner and removes unwanted phosphate contamination.