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Thread: Cartridge filter size

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    Join Date
    Oct 2008
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    Bedford, TX
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    Cartridge filter size

    I need to replace the sand filter I have because of a crack in the multi port. When Pool people installed last year I was kinda wondering why they put A LOT of silicone on one of the fittings in the multiport. I took the multiport off and disconnected the fitting to change the sand and found out why. They cracked the multiport where the fitting goes in. I think buying the multiport is almost comparable to switching to a filter in $$.

    The pool is 12x24, 10K gallon, 1 hp waterway 2 speed. what would be the minimum and ideal SF size for a cartridge filter? I see everything from 50 to a whole lot.

    Thanks,
    12x24 AGP, 10k, 1 hp 2 speed Waterway pump, Hayward C900 Cartridge filter, Polaris 65, maintained by Walmart's 6% Bleach.

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    JasonLion's Avatar
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    Re: Cartridge filter size

    A complete multi-port valve runs around $100 to $150. A complete filter runs around $200 to $600. You might only need a part for the multi-port, which would hopefully be less than an entire valve.

    In general, when buying a filter, larger is better. I suggest 75 to 150 sqft, depending on your budget. Larger filters are more efficient and don't need to be cleaned as frequently.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3
    frustratedpoolmom's Avatar
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    Re: Cartridge filter size

    I have a 2 speed pump, my cartridge is 150sf...I have about 13,000 gallons.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  4. Back To Top    #4

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    Re: Cartridge filter size

    JasonLion, It's the multiport housing that is cracked so I would need another one. I checked some prices they run from 150-175 for another on. It's a Aquatools AT3120 200 lb 21". I'll have to do some more research this weekend.

    Quote Originally Posted by JasonLion
    A complete multi-port valve runs around $100 to $150. A complete filter runs around $200 to $600. You might only need a part for the multi-port, which would hopefully be less than an entire valve.

    In general, when buying a filter, larger is better. I suggest 75 to 150 sqft, depending on your budget. Larger filters are more efficient and don't need to be cleaned as frequently.
    12x24 AGP, 10k, 1 hp 2 speed Waterway pump, Hayward C900 Cartridge filter, Polaris 65, maintained by Walmart's 6% Bleach.

  5. Back To Top    #5
    JasonLion's Avatar
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    Re: Cartridge filter size

    I believe you want part #14 on this page, though there is some chance that I have the wrong valve.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    mas985's Avatar
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    Re: Cartridge filter size

    I have a 21k gallon pool with a 420 sq-ft cartridge filter but my pool stays open all year around. I clean it about twice a year with minimal PSI rise.

    In your part of the country my guess is that you only have the pool open for 3 months a year so I would go with at least a 100 sq-ft filter and at most 150 sq-ft so you won't need to clean it more than once a season. Also, this puts you in the range of a single cartridge filter which will make cleaning a bit easier.
    Mark
    Hydraulics 101; Pump Ed 101; Pump and Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, 1/2 HP 2sp pump, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  7. Back To Top    #7

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    Re: Cartridge filter size

    I just checked and that's exactly what I need. I'll have to bookmark that website. for $56 definately a reason just to repair. How difficult would it be to replace? I'm pretty mechanically inclined.

    Quote Originally Posted by JasonLion
    I believe you want part #14 on this page, though there is some chance that I have the wrong valve.
    12x24 AGP, 10k, 1 hp 2 speed Waterway pump, Hayward C900 Cartridge filter, Polaris 65, maintained by Walmart's 6% Bleach.

  8. Back To Top    #8

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    Re: Cartridge filter size

    Just an update. Ordered the part on last Sunday from Poolandspa.com. Called the place Wednesday to see if when it might be shipped out. Reply "still workin on it, just wait for our email call back Friday if you don't get anything". I called today and the nice lady said "it's at shipping and it might go out on Monday" Hopefully the shipping is quicker than the processing. As of today just trying to rig something to keep the water flowing so the water doesn't get worse than it already is. Had to go to the old favorite of JB weld today, will try to put in service Saturday morning.
    12x24 AGP, 10k, 1 hp 2 speed Waterway pump, Hayward C900 Cartridge filter, Polaris 65, maintained by Walmart's 6% Bleach.

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