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Thread: DIY pipe sizing and filter

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    DIY pipe sizing and filter

    I'm doing a diy vinyl inground pool and have some ?'s.
    The pool is freeform 36k gallons.I have an intelliflo pump. I plan on the following pipe structure.
    2 - 2" skimmer lines
    1 - 2" main drain
    1 - 2" for 3 step returns (2 on main step/1 on deep end contiur step)
    1 - 2" for 2 inpool returns
    1 - 2" for small waterfall
    1 - 2" for 6 deck jets (t'ed to 3/4" to each deck jet)
    all above runs with a valve on each @ pump

    Any suggestions on a filter - Most people in my area use sand filters. I'm leaning toward a pentair.


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    Join Date
    Mar 2007
    Morris, IL
    I don't know about sizing, but if I am remembering correctly, having one main drain is illegal, there needs to be two of them so that a child cannot get stuck in the suction and drown.

    Above Ground / 18' Round / Vinyl Liner / Sand Filter / 100K Gas Heater / Salt Added / No Nature2

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    yes there will be 2 drains (anti-vortex) with one 2" line going to it. I guess I should have given more details.

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Sand filters are all pretty much alike......but size does matter. You can never buy one too large but easily can get one too small. One that has a gpm rating about 20-30% larger than the gpm your pump produces is a very nice match.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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