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Thread: Sand filter too small?

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    pooly1's Avatar
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    Sand filter too small?

    I have a inground 16x32 pool with a crystal flo sand filter says model T-170BP-1 says 150lbs sand capacity. My pool is roughly 22500. Should I upgrade? Seems like the turnover is about if not exceeding 12hours
    16 x 32 Inground Vinyl 21000, 2 returns, 1 skimmer, 1 main drain. Raypak Heater, Crystal Flo Sand Filter

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    Mod Squad jblizzle's Avatar
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    Re: Sand filter too small?

    We would generally recommend at least a 4.2 sqft sand filter for your pool. So at the minimum a 27" filter.

    Posted from my Droid with Tapatalk ... sorry if my response is short
    Jason, TFP Moderator
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    pooly1's Avatar
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    Re: Sand filter too small?

    Yeah I figured as much, should I go with hayward or pentair?
    16 x 32 Inground Vinyl 21000, 2 returns, 1 skimmer, 1 main drain. Raypak Heater, Crystal Flo Sand Filter

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    Mod Squad jblizzle's Avatar
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    Re: Sand filter too small?

    Personal preference ... both make good stuff.

    Posted from my Droid with Tapatalk ... sorry if my response is short
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Mod Squad Bama Rambler's Avatar
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    Re: Sand filter too small?

    I would go with whoever has the most dealers in the area. That improves your chance of them having a part in stock in case od emergency.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    pooly1's Avatar
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    Re: Sand filter too small?

    Star-Clear Plus Cartridge Filter 175sq

    With a 1hp pump 2 speed pump pools about 22000 gallons no water features

    That combo seem okay?
    16 x 32 Inground Vinyl 21000, 2 returns, 1 skimmer, 1 main drain. Raypak Heater, Crystal Flo Sand Filter

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    Mod Squad jblizzle's Avatar
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    Re: Sand filter too small?

    For cartridge filter, we would recommend a minimum of about 320 sqft, so that is much too small.

    Posted from my Droid with Tapatalk ... sorry if my response is short
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    pooly1's Avatar
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    Re: Sand filter too small?

    Oh wow I was just going by the chart in pumping forum.
    16 x 32 Inground Vinyl 21000, 2 returns, 1 skimmer, 1 main drain. Raypak Heater, Crystal Flo Sand Filter

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    Mod Squad jblizzle's Avatar
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    Re: Sand filter too small?

    We actually usually recommend double the size in the chart for cartridge and DE filters to reduce frequency of cleaning.

    Smaller would certainly work however you would have to clean more often.

    Posted from my Droid with Tapatalk ... sorry if my response is short
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    pooly1's Avatar
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    Re: Sand filter too small?

    Well I had to upgrade my pump and now I have a 1hp 2 speed. What would be my turnover rate with my current filter running at low speed?
    16 x 32 Inground Vinyl 21000, 2 returns, 1 skimmer, 1 main drain. Raypak Heater, Crystal Flo Sand Filter

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    Re: Sand filter too small?

    You should have a pump curve with the documentation of the pump or the curve should be on the manufacturer's website.....that'll tell you your rough gpm.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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