Swimming Pool DE Filter is one kinds of Swimming Pool Sand Filter, it known for its excellent filtration effect. Diatomaceous earth powder covers the filter, forming a fine, porous layer that traps even the smallest particles, including dirt and debris; able to make the pool water in cleaner, clearer pool water. They are particularly effective at removing particles, including fine dust, grease and even germs. This can be creates a healthier, safer swimming environment for you and your family.