Diatomaceous Earth (DE) Filters for Above Ground & In-Ground Swimming Pools

DE filters use diatomaceous earth as a filter media. The DE filter has plastic grids covered with a plastic type of fabric. A layer of filter powder called Diatomaceous Earth covers the grids and does the filtering.

As the water passes through the filter powder, any debris down to 5-8 microns is filtered out. Because the DE is much finer that sand, it is able to filter much more finely than a sand filter.