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PurexTriton Nautilus FNS Plus Fiberglass DE Filter

Many pool professionals consider D.E. filtration to be the finest, because it is capable of removing smaller particles than either sand or cartridge.

Diatomaceous earth is a porous powder with microscopic openings, that, when magnified, look like tiny sponges. Clear water can pass through these openings, but particles, as small as one to three microns, are trapped during the first pass through the media.

All D.E. filters have internal elements that become coated with D.E. It is this 'filter cake' that strains dirt, dust, algae and some forms of bacteria from the water.

Similiar to sand filters, when a D.E. filter becomes dirty, it is 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.


Nautilus FNS DE filters are commercial grade filter tanks manufactured from a fiberglass reinforced polypropylene material for superior strength and reliability. These tanks will stand up to the toughest conditions.

The unique upper manifold design ensures a more complete precoat and a more complete backwash. The curved vertical grids make maintenance convenient and permits longer cycles between cleanings.

Full 1 year limited tank warranty.

Valve is not included.

Picture is of the Nautilus filter. The Nautilus Plus is slightly different.


Pentair Nautilus Plus DE Filter Model FNSP24
Model FNSP24 Specifications- 24 sq. feet, height 37in., 60 GPM
$469.00
Pentair Nautilus Plus DE Filter Model FNSP36
Model FNSP36 Specifications- 36 sq. feet, height 43in., 90 GPM
$539.00
Pentair Nautilus Plus DE Filter Model FNSP48
Model FNSP48 Specifications- 48 sq. feet, height 49in., 120 GPM
$619.00
Pentair Nautilus Plus DE Filter Model FNSP60
Model FNSP60 Specifications- 60 sq. feet, height 55in., 150 GPM
$699.00
Pentair DE Filter 2" Multiport Valve
2 inch Multiport Valve with plumbing manifold.
$129.00
Pentair DE Filter 1-1/2" Multiport Valve
1-1/2 inch Multiport Valve with plumbing manifold.
$99.00