Dicalite DE25BOX 25 lbs Diatomaceous Earth Pool Filter D.E

All-natural, high-grade powder provides truly superior filtration, so you can enjoy crystal clear pool water! DE powder is the filtration media for diatomaceous earth pool filter systems. All-natural, high-grade powder. DE powder filters out contaminant particles as small as 3 to 5 microns. Provides superior filtration to sand and cartridge filter systems. Will leave your pool water crystal clear and sparkling clean. Our DE powder will not clump. Replace your DE powder each time you backwash your DE filter system. Recommended amount for above ground DE pool filter systems = 4 lbs. Recommended amount for in-ground DE pool filter systems = 8 lbs. Available in several different quantities. Economically priced.