Sand pool filters handle particles down to about 20 microns, cartridge filters down to 10 microns, and DE models down to about 5 microns. How important that is will depend on your viewpoint.

Reviewed by Deane BiermeierReviewed by Deane Biermeier Backwashing is a method to thoroughly clean a swimming pool's filter and avoid having to clean it manually. It usually takes just a few ...

A pump attached to your sand filter is the solution for keeping everything moving, filtered and clean.