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Thread: Quick technical question - Sand Filter capacity

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    HardTrance9's Avatar
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    Quick technical question - Sand Filter capacity



    Hello everyone,

    I want to install a sand filter in a pool that is 18,500 US Gal. or 70,000 liters.

    I was trying to find the specs (with easy numbers) on the Hayward S244T sand filter effective filtration area
    or filtration capability to check if this model would be more than enough to clean the pool in 5 hours aprox.

    But I got the manual and says "effective filtration area = 0.29 sq. meters or 3.1 sq. ft, so I am having trouble converting
    that into liquid.

    Just really need to know how many gallons or liters per cycle or so this filter can handle so we know if we are buying the correct size or not.

    Thanks for any help!

    https://www.hayward-pool.com/pdf/man...220T-S244T.pdf
    In charge of some SWG and Bleach pools... still a newbie..

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    Mod Squad Bama Rambler's Avatar
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    Re: Quick technical question - Sand Filter capacity

    ON a sand filter the volume isn't important. The surface area is the deciding factor. With a ~19,000 gallon pool you need bigger than a 3 ft² filter. I'd recommend the S300T as a minimum.
    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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    Mod Squad JohnT's Avatar
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    Re: Quick technical question - Sand Filter capacity

    What pump do you have?
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    Mod Squad jblizzle's Avatar
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    Re: Quick technical question - Sand Filter capacity

    Based on our typical recommendations, the minimum for a 18,500 gallons pool would be 3.4 sqft or 25" diameter. The 24" filter is pretty close and would likely be fine, just require more frequent cleanings than a larger filter.

    Inferring from your words ... turn over rate is pretty meaningless. You are generally better off running a pump on a low speed for a longer time and thus savings yourself money on electricity (which is likely part of why John asked what he did). See this article for more info about figuring out pump run time: http://www.troublefreepool.com/conte...-pump-run-time

    Additionally, if your pump is just too big, it can reduce the filtration effectiveness and require a larger filter.
    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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    HardTrance9's Avatar
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    Re: Quick technical question - Sand Filter capacity

    Hi everyone,

    Many thanks for your great replies.

    The pump is a Hayward 2.0 HP, 220 volts

    The pool is located in a condominium compound with 25 units. Not all the people are there full time year long but in Easter or so, we do get a bunch of people in the pool, and we need to adjust the current DE filter to run at least 8 hours to keep it clean. We want to exchange it as it is more expensive to maintain and replace the inner "ribs" every now and then than a sand filter, so that is the reason why we are trying to find out which would be the recommended size for this specific case.

    The 300T? the 224T?

    I gues that is 30" diamater vs. 24.4"?

    Thanks a lot!!
    In charge of some SWG and Bleach pools... still a newbie..

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    JasonLion's Avatar
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    Re: Quick technical question - Sand Filter capacity

    With more than residential usage, you will want something larger than 30". Yes, 30" diameter.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Mod Squad jblizzle's Avatar
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    Re: Quick technical question - Sand Filter capacity

    In a public capacity, I might think going with the 30" at least would be better ... should filter a little better/faster when there is high usage.
    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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    HardTrance9's Avatar
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    Re: Quick technical question - Sand Filter capacity

    Ok many thanks for your comments! Very helpful as always.

    Cheers!
    In charge of some SWG and Bleach pools... still a newbie..

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