Diatomaceous earth, or DE filters, incorporates the exoskeletons of tiny diatoms to efficiently filter your swimming pool water. The exoskeletons coat the filter’s grid housing and act as a sieve to remove particulate. Ultimately, DE filters have the lowest micron rating out of the three different types of filters at about two to five microns, and are known as “water polishers.” Diatomaceous earth filters are typically the most popular choice in swimming pool filters when it comes to removing the smallest particles. DE filters could be the right choice for you if you want perfectly filtered water.Although these pool filters can efficiently remove fine, small particles, they actually require a bit more maintenance than other pool filters. They typically run at a high pressure, and must be backwashed once they need to be cleaned. Backwash refers to running the water backwards through the filter to remove trapped dirt and debris within the media after the pressure has dropped. 
Hayward  36 SF DE Filter Pro-Grid Permaglass Xl DE3620

Pro-Grid vertical grid D.E. filters provide superior water clarity, efficient flow and large cleaning capacity for pools and spas of all types and sizes. Constructed with high-strength reinforced ther

$813.75
Hayward  48 SF DE Filter Pro-Grid Permaglass Xl DE4820

Pro-Grid vertical grid D.E. filters provide superior water clarity, efficient flow and large cleaning capacity for pools and spas of all types and sizes. Constructed with high-strength reinforced ther

$917.50
Hayward  60 SF DE Filter Pro-Grid Permaglass Xl DE6020

Pro-Grid vertical grid D.E. filters provide superior water clarity, efficient flow and large cleaning capacity for pools and spas of all types and sizes. Constructed with high-strength reinforced ther

$1,011.25
Hayward  72 SF DE Filter Pro-Grid Permaglass Xl DE7220

Pro-Grid vertical grid D.E. filters provide superior water clarity, efficient flow and large cleaning capacity for pools and spas of all types and sizes. Constructed with high-strength reinforced ther

$1,282.50
Pentair  DE Filter Fns Plus 36 SF W/O Valve 180007

FNS Plus Filters feature the same, superior curved grid design as the FNS, but with a fiberglass reinforced polypropylene body for advanced chemical resistance and superior strength. Features:

$836.25
Pentair  DE Filter Fns Plus 48 SF W/O Valve 180008

FNS Plus Filters feature the same, superior curved grid design as the FNS, but with a fiberglass reinforced polypropylene body for advanced chemical resistance and superior strength. Features:

$942.50
Pentair  DE Filter Fns Plus 60 SF W/O Valve 180009

FNS Plus Filters feature the same, superior curved grid design as the FNS, but with a fiberglass reinforced polypropylene body for advanced chemical resistance and superior strength. Features:

$1,040.00
Pentair  DE Filter Smbw 4048 47 SF 2" Thd W/Valve 11555

Our SMBW 4000 Series Filters remove the tiniest of contaminants, so your water truly sparkles. In addition to exceptional filtration, they feature sheet molded fiberglass tanks and Noryl rotary backwa

$1,170.00
Pentair  DE Filter Smbw 4060 58 SF 2" Thd W/Valve 147411

Our SMBW 4000 Series Filters remove the tiniest of contaminants, so your water truly sparkles. In addition to exceptional filtration, they feature sheet molded fiberglass tanks and Noryl® rotary ba

$1,373.75
Pentair  Quad DE Filter 100 188594

Quad D.E.® Filters provide the highest water clarity of D.E. with the convenience and easy-cleaning features of a cartridge filter. Four easily accessible and removable D.E. cartridges greatly increa

$1,442.50
Pentair  Quad DE Filter 60 188592

Quad D.E.® Filters provide the highest water clarity of D.E. with the convenience and easy-cleaning features of a cartridge filter. Four easily accessible and removable D.E. cartridges greatly increa

$1,023.75
Pentair  Quad DE Filter 80 188593

Quad D.E.® Filters provide the highest water clarity of D.E. with the convenience and easy-cleaning features of a cartridge filter. Four easily accessible and removable D.E. cartridges greatly increa

$1,322.50
Pentair Nautilus DE Filter 36 SF Less Valve

The FNS D.E. filter was designed to provide the clearest, most sparkling water possible, with ease of maintenance and long-term reliability in mind. So you can count on it to keep your pool's water cl

$11,390.00
Sta-Rite  DE Filter 48 SF System 2 PLDE48

System:2 Modular D.E. Filters - PLDE Series for larger pools deliver high quality D.E. filtration in a simple, one-piece module design that's easier to clean than grid designs. The unique balanced-flo

$907.50 $726.00
Sta-Rite System 3  DE Filter 53 SF  S8D110

System:3 D.E. Filters - SD Series bring you the proven performance of our diatomaceous earth media in the world's easiest-to-operate D.E. filter. The greater cycle times and minimized maintenance of t

$1,095.00 $876.00
Sta-Rite System 3  DE Filter 72 SF  S7MD72

System:3 Modular D.E. Filters - SMD Series deliver high quality D.E. filtration in a simple, one-piece module design that's easier to clean than grid designs. The unique balanced-flow tank design maxi

$1,287.50 $1,030.00

A filter is used to only remove particulate from your water, so it’s important to still maintain a sanitation system in your swimming pool system. There are three main types of swimming pool filters: sand, cartridge and Diatomaceous earth. Sand filters work the same way as Diatomaceous earth filters, but instead incorporates a bed of sand as the media bed. They also require backwashing. Cartridge filters use cartridge grids to trap dirt and debris.

The main difference between the three types of pool filters can be summarized by the micron size. A swimming pool filter’s efficiency is measured by its micron rating, meaning how many microns can pass through the filter. A micron is a unit of length equal to one millionth of a meter (1/1,000,000 m), or 0.0000394 of an inch. The lower the micron rating on the filter, the smaller the particles it can remove from your water. 

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