Best Seller | Robelle Swimming Pool D.E. Filter Media - Blue Diatomaceous Earth, or D.E., is an efficient and long-lasting filter powder. D.E. particles act as tiny sieve, removing debris and filtering out products as small as 5 microns. the D.E. is packaged in an easy-to-handle box that pours and stores cleanly. ... more Robelle Swimming Pool D.E. Filter Media - Blue Diatomaceous Earth, or D.E., is an efficient and long-lasting filter powder. D.E. particles act as tiny sieve, removing debris and filtering out products as small as 5 microns. the D.E. is packaged in an easy-to-handle box that pours and stores cleanly. Bed Bath & Beyond | | $59.99 FREE shipping go to store |