Diatomaceous earth, referred to simply as DE, is a natural sedimentary rock composed of fossilized remains of microscopic algae called diatoms. It has a powdery texture and is rich in silica.

There are three types of filters for backyard pools: cartridge, sand, and diatomaceous earth (often referred to as 'DE' filters). Their purpose is to remove dirt from the water, helping to keep it ...

Diatomaceous earth, referred to simply as DE, is a natural sedimentary rock composed of fossilized remains of microscopic algae called diatoms.