hth® D.E. Filter Aid for Swimming Pools, 24 lbs

hth® D.E. filter aid, 24 lbs. removes particles as small as 2-6 microns. Replacing this media as needed helps ensure optimum performance from your filter to keep your pool water clear.

For all D.E. (diatomaceous earth) filters on pools and spas

Removes small particles and restores filter efficiency