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D.E. Filtration. D.E. stands for Diatomaceous Earth and it looks like a very fine powder. If you look at it under a microscope, it looks like a bunch of tiny sponges. Clear water can pass hrough the openings in those little sponges, but that is about all that can. Debris in the water as small as 3 microns, is trapped trying to pass through the porous D.E. powder. Comparatively speaking, a gran of sand is roughly 1000 microns in size so we're talking being able to strain dirt, dust and even algae from the water.

Similar to sand filters, when D.E. filters become dirty, they are cleaned either by backwashing, or regenerating and draining the clogged D.E. to the 'waste' line. To restore filtration, a fresh 'charge' of D.E. is added to the filter.


4000 Series D.E.
4000 Series D.E.
Pentair FNS Plus D.E. Filters
FNS Plus
Pentair Quad Cartridge/D.E.
Quad Crtrge/D.E.
 
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