Fns Plus
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 PENTAIR 59023700 FNS PLUS FILTER MANIFOLD AIR BLEED $59.99 Time Remaining: 12h 20m Buy It Now for only: $59.99 Buy It Now | Add to watch list |
 NEW PENTAIR 261177 15 Multiport Valve for DE Pool Filters Fits FNS Plus NSP $94.95 Time Remaining: 2d 18h 33m Buy It Now for only: $105.95 Buy It Now | Bid now | Add to watch list |
 Pentair FNS Plus Pool Filter 48 Grid Assembly 59023400 $249.95 Time Remaining: 27d 15h 37m Buy It Now for only: $249.95 Buy It Now | Add to watch list |
 Pentair PacFab FNS FNS Plus DE Pool Filter 36sf Grids 8pc Grid Set FS 2003 $109.95 Time Remaining: 5d 8h 19m Buy It Now for only: $109.95 Buy It Now | Add to watch list |
 Pentair FNS Plus DE Filter Manifold 59023700 W AirBleed CRACKED $0.99 Time Remaining: 1d 9h 37m Buy It Now for only: $14.99 Buy It Now | Bid now | Add to watch list |
 PLEATCO DE GRID POOL GRIDS 48 SQ FT FOR HAYWARD DE FILTERS SET OF 8 KIT $105.90 Time Remaining: 21d 9h 57m Buy It Now for only: $105.90 Buy It Now | Add to watch list |
 Pentair PacFab FNS FNS Plus DE Pool Filter 48sf Grids 8pc Grid Set FS 2004 $139.95 Time Remaining: 5d 8h Buy It Now for only: $139.95 Buy It Now | Add to watch list |
 8 Pack New UNICEL DE FS 2005 Filter Grids Set 60 Sq Ft Hayward Pac Fab FS2005 $126.95 Time Remaining: 21d 12h 56m Buy It Now for only: $126.95 Buy It Now | Add to watch list |
 NEW PENTAIR 180008 FNS Plus FNSP48 Inground Swimming Pool DE Filter 48 Sq Ft $668.95 Time Remaining: 2d 21h 14m Buy It Now for only: $736.95 Buy It Now | Bid now | Add to watch list |
 PLEATCO DE FILTER GRIDS FOR PENTAIR HAYWARD 60 SQ FT POOL SET OF 8 $136.99 Time Remaining: 12d 16h 38m Buy It Now for only: $136.99 Buy It Now | Add to watch list |
 Pentair CCP FNS Plus Filter Tank O ring 39010200 $16.95 Time Remaining: 17d 19h 8m Buy It Now for only: $16.95 Buy It Now | Add to watch list |
 8 Pack New UNICEL DE FS 2005 Filter Grids Set 60 Sq Ft Hayward Pac Fab FS2005 $125.95 Time Remaining: 2d 20h 43m Buy It Now for only: $139.95 Buy It Now | Bid now | Add to watch list |
 Pentair FNS Plus DE Filter Manifold 59023700 W AirBleed $69.92 Time Remaining: 16h 6m Buy It Now for only: $69.92 Buy It Now | Add to watch list |
 Pentair 98209800 Manual Air Relief Valve Kit Fits FNS Clean Clear Plus Filter $20.19 Time Remaining: 24d 15h 21m Buy It Now for only: $20.19 Buy It Now | Add to watch list |
 Pentair Hayward Pac Fab DE Pool Filter Grids 48 sqft $112.00 Time Remaining: 23d 10h 32m Buy It Now for only: $112.00 Buy It Now | Add to watch list |
 8 Pack New UNICEL DE FS 2005 Filter Grids Set 60 Sq Ft Hayward Pac Fab FS2005 $125.95 Time Remaining: 3d 22h 17m Buy It Now for only: $139.95 Buy It Now | Bid now | Add to watch list |
 PLEATCO DE FILTER GRIDS FOR PENTAIR HAYWARD 48 SQ FT POOL SET OF 8 $112.95 Time Remaining: 4d 14h 18m Buy It Now for only: $112.95 Buy It Now | Add to watch list |
 UNICEL DE Filter Grids Set 36 Sq Ft Hayward Pac Fab $83.95 Time Remaining: 15d 17h 24m Buy It Now for only: $83.95 Buy It Now | Add to watch list |
 PENTAIR 263064 2 PVC Slide Pump Backwash Valve for Side Mount Sand DE Filters $70.95 Time Remaining: 4d 19h 31m Buy It Now for only: $79.95 Buy It Now | Bid now | Add to watch list |
 Pentair Hayward Pac Fab DE Pool Filter Grids 36 Sq Ft $89.99 Time Remaining: 21d 13h Buy It Now for only: $89.99 Buy It Now | Add to watch list |
 Pentair PacFab FNS FNS Plus DE Pool Filter 60sf Grids 8pc Grid Set FS 2005 $179.95 Time Remaining: 5d 7h 47m Buy It Now for only: $179.95 Buy It Now | Add to watch list |
 Pentair American Products Titan DE Pool Filter 36sf Grids 8pc Grid Set FS 2003 $109.95 Time Remaining: 5d 8h 17m Buy It Now for only: $109.95 Buy It Now | Add to watch list |
 NEW PENTAIR 180009 FNS Plus FNSP60 Inground Swimming Pool DE Filter 60 Sq Ft $734.00 Time Remaining: 4d 21h 14m Buy It Now for only: $808.95 Buy It Now | Bid now | Add to watch list |
 Jandy DEL48 Pool Filter 48sf DE Replacement Grids 8pc Grid Set $139.95 Time Remaining: 19d 6h 1m Buy It Now for only: $139.95 Buy It Now | Add to watch list |
 Hayward DE3620 36 sq ft De Filter Grid Set 8 Grids $89.99 Time Remaining: 26d 13h 47m Buy It Now for only: $89.99 Buy It Now | Add to watch list |
 Pentair FNS Plus FNS60 DE 60sf Pool Filter Tank Lid 170022 $239.95 Time Remaining: 27d 8h 16m Buy It Now for only: $239.95 Buy It Now | Add to watch list |
 NEW PENTAIR 180007 FNS Plus FNSP36 Inground Swimming Pool DE Filter 36 Sq Ft $628.95 Time Remaining: 4d 19h 57m Buy It Now for only: $692.95 Buy It Now | Bid now | Add to watch list |
 98209800 Pentair FNS Manual Air Relief Valve w Gauge $20.10 Time Remaining: 4d 1h 39m Buy It Now for only: $20.10 Buy It Now | Add to watch list |
 FREE 3 4 DAY SHIPPING FNS Plus Spring Barrel Nut Assembly Filter Clamp 53108900 $29.95 Time Remaining: 9d 21h 35m Buy It Now for only: $29.95 Buy It Now | Add to watch list |
 NEW PENTAIR 180008 FNS Plus FNSP48 Inground Swimming Pool DE Filter 48 Sq Ft $668.95 Time Remaining: 4d 21h 35m Buy It Now for only: $736.95 Buy It Now | Bid now | Add to watch list |
 Nautilus Plus FNS 48 sqft De Filter Grid Set Of 8 Grids $141.00 Time Remaining: 3d 9h 58m Buy It Now for only: $141.00 Buy It Now | Add to watch list |
 8 Pack New UNICEL DE FS 2004 Filter Grids Set 48 Sq Ft Hayward Pac Fab FS2004 $104.95 Time Remaining: 21d 12h 54m Buy It Now for only: $104.95 Buy It Now | Add to watch list |
 PENTAIR FNS SMBW CLEAN CLEAR AIR RELIEF VALVE FILTER PART 98209800 $10.90 Time Remaining: 5d 13h 9m Buy It Now for only: $10.90 Buy It Now | Add to watch list |
 New UNICEL FS 2003 DE Filter Grids Set 36 Sq Ft Hayward Pac Fab Set FS2003 $82.95 Time Remaining: 4d 18h 30m Buy It Now for only: $92.95 Buy It Now | Bid now | Add to watch list |
 Hayward Pro Grid DE Pool Filter Top Manifold DEX2400C $45.92 Time Remaining: 15h 50m Buy It Now for only: $45.92 Buy It Now | Add to watch list |
 Pentair FNS Plus Pool Filter 36f Grid Assembly 59023500 $229.95 Time Remaining: 6d 11h 3m Buy It Now for only: $229.95 Buy It Now | Add to watch list |
 8 Pack New UNICEL DE FS 2005 Filter Grids Set 60 Sq Ft Hayward Pac Fab FS2005 $125.95 Time Remaining: 4d 20h 42m Buy It Now for only: $139.95 Buy It Now | Bid now | Add to watch list |
 Filbur De grid 60 Sqft Grids full set Swimming Pool Hayward Pro Grid Pentair New $109.98 Time Remaining: 8d 16h 8m Buy It Now for only: $109.98 Buy It Now | Add to watch list |
 Pentair Hayward Pac Fab DE Pool Filter Grids 48 Sq Ft $104.99 Time Remaining: 21d 13h 5m Buy It Now for only: $104.99 Buy It Now | Add to watch list |
 PLEATCO POOL DE GRID FOR HAYWARD PENTAIR SET OF 8 48 SQ FT DE FILTERS GRIDS $112.75 Time Remaining: 4d 14h 18m Buy It Now for only: $112.75 Buy It Now | Add to watch list |
 NEW PENTAIR 261177 15 Multiport Valve for DE Pool Filters Fits FNS Plus NSP $94.95 Time Remaining: 4d 21h 55m Buy It Now for only: $105.95 Buy It Now | Bid now | Add to watch list |
 Pentair PacFab Nautilus DE Pool Filter 36sf Grids 8pc Grid Set FS 2003 $109.95 Time Remaining: 5d 8h 18m Buy It Now for only: $109.95 Buy It Now | Add to watch list |
 Pentair Hayward Pac Fab 60 Sq Ft DE Filter Grids Set $144.99 Time Remaining: 3d 15h 59m Buy It Now for only: $144.99 Buy It Now | Add to watch list |
 New UNICEL FS 2003 DE Filter Grids Set 36 Sq Ft Hayward Pac Fab Set FS2003 $82.95 Time Remaining: 5d 19h 42m Buy It Now for only: $92.95 Buy It Now | Bid now | Add to watch list |
 Pentair Hayward Pac Fab DE Pool Filter Grids 60 Sq Ft $128.99 Time Remaining: 21d 13h 7m Buy It Now for only: $128.99 Buy It Now | Add to watch list |
 Leslies Crystal Clear 60 sqft De Filter Grids DELE42056 $144.99 Time Remaining: 23d 11h 36m Buy It Now for only: $144.99 Buy It Now | Add to watch list |
 Pentair FNS Plus Filter Spring Barrel Nut 53108900 $31.95 Time Remaining: 18d 8h 40m Buy It Now for only: $31.95 Buy It Now | Add to watch list |
 New Pentair 59023700 DE Top FNS Plus Filter Manifold and Air Bleed Heavy Duty $61.95 Time Remaining: 19h 11m Buy It Now for only: $69.95 Buy It Now | Bid now | Add to watch list |
 Pentair Hayward Pac Fab 60 Sq Ft DE Filter Grid Set $144.99 Time Remaining: 4d 17h 44m Buy It Now for only: $144.99 Buy It Now | Add to watch list |
 Pentair Quad DE Clean Clear Plus FNS Plus Filter Tank O ring 39010200 O 497 $16.95 Time Remaining: 27d 17h 32m Buy It Now for only: $16.95 Buy It Now | Add to watch list |
 FNS PLUS DE FILTER MANIFOLD 59023700 59000400 $62.99 Time Remaining: 18d 17h 37m Buy It Now for only: $62.99 Buy It Now | Add to watch list |
 8 Pack New UNICEL DE FS 2004 Filter Grids Set 48 Sq Ft Hayward Pac Fab FS2004 $103.95 Time Remaining: 6d 18h 47m Buy It Now for only: $115.95 Buy It Now | Bid now | Add to watch list |
 HEAVY DUTY POOL FILTER DE MANIFOLD REPLACEMENT FOR PENTAIR FNS PLUS 59023700 $62.95 Time Remaining: 22d 16h 59m Buy It Now for only: $62.95 Buy It Now | Add to watch list |
 PLEATCO DE FILTER GRIDS FOR PENTAIR HAYWARD 36 SQ FT POOL SET OF 8 $92.30 Time Remaining: 4d 14h 18m Buy It Now for only: $92.30 Buy It Now | Add to watch list |
 8 New UNICEL FG 1002 DE Filter Full Grids 24 Sq Ft 12 FC 9320 PSC 2 $73.95 Time Remaining: 6d 20h 54m Buy It Now for only: $82.95 Buy It Now | Bid now | Add to watch list |
 NEW PENTAIR FNS PLUS POOL FILTER DRAIN PLUG WITH GASKET 86202000 $15.99 Time Remaining: 18d 13h 33m Buy It Now for only: $15.99 Buy It Now | Add to watch list |
 7 New UNICEL FG 1002 DE Replacement Filter Full Grid 24 Sq Ft FC 9320 PSC 2 $64.95 Time Remaining: 10d 17h 4m Buy It Now for only: $64.95 Buy It Now | Add to watch list |
 PENTAIR MANUAL AIR RELIEF VALVE PART 98209800 FOR FNS PLUS FILTERS $11.00 Time Remaining: 26d 12h 16m Buy It Now for only: $11.00 Buy It Now | Add to watch list |
 7 New UNICEL FG 1002 DE Replacement Filter Full Grid 24 Sq Ft FC 9320 PSC 2 $63.95 Time Remaining: 6d 20h 23m Buy It Now for only: $71.95 Buy It Now | Bid now | Add to watch list |
 DE Filter Grids 48 Sq Complete Set of 8 FS 2004 DE $103.99 Time Remaining: 15d 9h 38m Buy It Now for only: $103.99 Buy It Now | Add to watch list |
 Hayward Pro Grid DE Grids Set for 60 sq ft DE Filter $129.99 Time Remaining: 29d 15h 19m Buy It Now for only: $129.99 Buy It Now | Add to watch list |
 Pentair FNS Band Clamp $70.00 Time Remaining: 4d 21h 1m Buy It Now for only: $85.00 Buy It Now | Bid now | Add to watch list |
 PLEATCO DE GRID FOR POOL FG1005 9350 60 SQ FT DE FILTER FREE SHIP PFS3060 $136.75 Time Remaining: 4d 14h 18m Buy It Now for only: $136.75 Buy It Now | Add to watch list |
 Pac Fab FNS Plus 36 sq ft De Filter Grid Set 8 Grids $89.99 Time Remaining: 8d 18h 33m Buy It Now for only: $89.99 Buy It Now | Add to watch list |
 PLEATCO POOL GRIDS DE GRID 72 SQ FT FOR HAYWARD DE FILTERS SET OF 8 KIT $168.88 Time Remaining: 28d 10h 31m Buy It Now for only: $168.88 Buy It Now | Add to watch list |
 New UNICEL FG 1002 DE Filter Full Grid 24 Sq Ft 7 Required FC 9320 PSC 2 $20.95 Time Remaining: 6d 19h 27m Buy It Now for only: $24.95 Buy It Now | Bid now | Add to watch list |
 Pentair Hayward Pac Fab DE Pool Filter Grids 36 sqft $92.50 Time Remaining: 3d 10h 34m Buy It Now for only: $92.50 Buy It Now | Add to watch list |
 Pentair FNS Plus Pool Filter 60 Grid Assembly 59023300 $289.95 Time Remaining: 6d 9h 19m Buy It Now for only: $289.95 Buy It Now | Add to watch list |
 Pentair FNS Plus Top Manifold $25.00 Time Remaining: 6d 16h 6m Buy It Now for only: $29.00 Buy It Now | Bid now | Add to watch list |
 FILBUR DE GRID POOL GRIDS 48 SQ FT FOR HAYWARD PLEATCO DE FILTERS SET OF 8 KIT $104.99 Time Remaining: 16d 16h Buy It Now for only: $104.99 Buy It Now | Add to watch list |
 Pentair PacFab FNS Plus DE Pool Filter 48sf Complete $239.95 Time Remaining: 26d 18h 42m Buy It Now for only: $239.95 Buy It Now | Add to watch list |
 Genuine Pentair FNS Plus DE Filter Top Manifold Air Bleed 59023700 $76.99 Time Remaining: 11d 14h 52m Buy It Now for only: $76.99 Buy It Now | Add to watch list |
 Pentair FNS Plus Top Manifold $25.00 Time Remaining: 6d 16h 10m Buy It Now for only: $29.00 Buy It Now | Bid now | Add to watch list |
 Pentair PacFab Nautilus DE Pool Filter 48sf Grids 8pc Grid Set FS 2004 $139.95 Time Remaining: 5d 7h 59m Buy It Now for only: $139.95 Buy It Now | Add to watch list |
 Pentair 071439 Purex 4000 Filter Tank O Ring 0 333 $12.99 Time Remaining: 7d 20h 21m Buy It Now for only: $12.99 Buy It Now | Add to watch list |
More Great Information on Fns Plus:
DE filter gaining pressure too fast! Please Help?
I opened my pool and it is almost clear but still cloudy. My problem is after backwashing, The pressure reads 20 psi which is the normal pressure for my pool, but then after about 1-2 hours, the pressure is back to 30-32 psi. Why is the pressure building so fast? I read recently that I could not be putting in enough DE after backwashing causing the debris (crap) to become stuck on the baffles inside the filter instead of becoming filtered by the DE. I Normally put in 1-2 cups. I have a Pentair Fns Plus Filter system and a 55,000 gallon pool.
Yes I forgot to mention that one of the main problems is that the skimmers stop sucking water when the filter gets that high of pressure. If the skimmers continued to work, I would not be this worried. But the skimers sucking power gets progressively worse as time passes then by the time the pressure is to high, there is no suction at all in the skimmers.
Check the flow of filtered water going back to the pool. If it is normal, don't worry about the pressure. As the filter clogs, the flow rate decreases. This is normal. If the flow rate drops quickly, Your Pool has problems that is overworking the filter. Talk to your pool expert.
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