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Thread: Sand filter question (how much)

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    Join Date
    May 2016
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    MD
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    Sand filter question (how much)

    How full should the sand filter be? I know mine kicks some out from time to time, and have heard it can lose 1/4 cup to backwashing.

    I have no idea how much I need in there as i took it over from previous owners, they have a bag of sand they left... doesn't say the size on it, but says it is for pools.

    ok, it has a 49/20 silica sand.

    I can't do a great sand cleaning as no matter what I close, water leaks out a pipe that can't be closed.... but when i opened it, it is just over half way full of sand...
    IG, 25k gallons, 20x40 ft, Plaster, Pentair sand filter, variable speed pump, have a well, TF-100 test kit, Speed Stir

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    Re: Sand filter question (how much)

    Sand filters come in many different sizes. Usually there is a tag on filter that gives you the square footage. A general rule of thumb 100lbs. of #20 silica sand for 1 sq. ft. of area. Also if you have the model # you could go to Pentair website to download a manual

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    MD
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    IG, 25k gallons, 20x40 ft, Plaster, Pentair sand filter, variable speed pump, have a well, TF-100 test kit, Speed Stir

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    Re: Sand filter question (how much)

    This would be The TR-60 which is 3.1 sq. ft. Manual should say it requires 320 lb of sand. The manual also has a picture of the freeboard measurement which is from top of filter to top of sand bed, which I believe to be 10-11 inches

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    MD
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    Re: Sand filter question (how much)

    ah, that is the part i was missing from the last time i looked. thanks. will measure this weekend and see what it needs.

    Guess i will check lowes if they have any sand when i go later today
    IG, 25k gallons, 20x40 ft, Plaster, Pentair sand filter, variable speed pump, have a well, TF-100 test kit, Speed Stir

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