This product is a highly concentrated deep cleaning solution that removes accumulations caused by: oils, grease, non-living organic matter, and more on filters. It is very effective on cartridge elements, D.E. filtration grids, sand filters and regenerative media filters. PRO SERIES Filter Cleaner improves the efficiency of the filter and lengthens the cycles between filter cleanings. It is compatible with chlorine, bromine and other disinfection systems. Clean without acid!