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Thread: Where is filter pressure info?

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    Join Date
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    Where is filter pressure info?

    I can't find information about what it should be and when to backwash. Pool store told us to just do it once a week and we'd be fine, but I'm learning quickly not to trust the pool store. So, how do I know? Current pressure is about 22.
    18,000 gallon in ground SWG sand filter electric cover

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    JasonLion's Avatar
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    Re: Where is filter pressure info?

    A good rule of thumb is to backwash/clean the filter when the filter pressure goes up 6 psi above it's clean filter pressure. In almost all cases once a week is way too often, though the actual frequency of cleaning depends a great deal on the relative size of your pool and filter.

    There is no standard pressure. Every pool has a different starting pressure.
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    Butterfly's Avatar
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    Re: Where is filter pressure info?

    You should also check your owner's manual for specific info., but generally backwash when psi increases about 6 above clean filter psi.

    Check Pool School under Pool Equipment. Maintenance and Cleaning of filters :
    pool-school/cleaning%20pool%20filters

    Edit: Changed psi info from 8 to 6
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  4. Back To Top    #4

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    Re: Where is filter pressure info?

    so once I backwash and rinse, will that give me my "starting" pressure?
    18,000 gallon in ground SWG sand filter electric cover

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    Butterfly's Avatar
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    Re: Where is filter pressure info?

    Quote Originally Posted by Kimmisue
    so once I backwash and rinse, will that give me my "starting" pressure?
    Yep, you are correct.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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