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Thread: Help with choosing new pump/filter for next season

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    Help with choosing new pump/filter for next season

    We got through last year using the equipment the homes previous owners left. A 2hp 1 speed doughboy pump and sand filter. I know for our approximately 18k gallon pool the pump is way oversized. I was looking at the pentair matrix 3/4 HP 2 speed pump. I'm hoping for an 8 hour turnover.

    The pool is a 28' ag with deep center, a center main drain, return and skimmer within 5 feet of the equipment pad. I'm having trouble finding the curve chart for that pump on low speed and understanding the math to pick out a good sand filter.
    18000 gal partially buried doughboy ag
    225 lbs. Sand Filter
    Single stage powerpak II pump

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    duraleigh's Avatar
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    Apr 2007
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    Sebring, Florida
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    Re: Help with choosing new pump/filter for next season

    Most all sand filters have a gpm rating that is pretty helpful. If you have found the curve for the proposed pump on high, simply take that gpm the pump will give you and add about 25% to that for the gpm of your sand filter.

    It doesn't have to be exactly 25% but close to that number will be fine with bigger being a bit better.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Help with choosing new pump/filter for next season

    OK so then the sand dollar 60 would be close and the 80 would be better
    18000 gal partially buried doughboy ag
    225 lbs. Sand Filter
    Single stage powerpak II pump

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