The Purpose of Diatomaceous Earth (DE) in a Pool Filter – …
Superior Filtration. Diatomaceous earth has microscopic pores that can filter out particles as small as 5 microns, which is smaller than what a sand or cartridge filter can capture.. DE also has the ability to trap contaminants in a way that other filters cannot. The powder coats the filter grids and forms a layer that allows water to pass through, …