Dive into crystal-clear water every time you swim with the superior strength and effectiveness of Viagrow Diatomaceous Earth Swimming Pool Filter Powder. This high-grade DE filter powder can filter particles as small as 3-5 microns, leaving your water sparkling and crystal clear without clumping. Made from the fossilized exoskeletons of diatoms, this all-natural, porous DE powder provides exceptional filtration, ensuring your filter operates at peak efficiency. Viagrow's value-priced DE powder not only keeps your water shimmering and beautiful but also reduces maintenance time and saves money on pool supplies. Recommended amounts: 4 lb for above-ground DE filters and 8 lb for in-ground DE filters.