D.E. Filters

Diatomaceous earth (D.E.) is mined and is the fossilized exoskeletons of tiny diatoms. They are used to coat "grids" in the filter housing and act as tiny sieves allowing for the removal of debris as small as 5 microns. Once the pressure rises, the filter is backwashed just like a sand filter and then "recharged" with more D.E. powder. D.E. filters trap debris as small as 2 - 5 microns.
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Diatomaceous earth is a porous powder with microscopic openings that when magnified look like tiny sponges.

Perflex® Extended-Cycle

Perflex Extended-Cycle D.E. filters clean pools fast, removing particles as small as two microns the first time through.

Perflex®

Perflex Extended-Cycle D.E. filters clean pools fast, removing particles as small as two microns the first time through. Its patented Flex-Tube™ design gives longer cycles between cleaning because the same D.E. filter powder is used over and over.