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Thread: what should the Pressure be for sand filter.

  1. Back To Top    #1

    Join Date
    Oct 2010

    what should the Pressure be for sand filter.

    15,000 gallon pool/spa with heater

    sta rite 1.5 hp pump, phk2ra6f-103L

    sta rite sand filter, 350lbs sand, cristal-flo 2, 145363

    Multi valve system because of the spa

    starting pressure 20psi? is that about right/normal?

    so I let it get upto 30psi before back washing? seems kinda high, but thats why i'm here asking cause you guys are the experts.

    15,000 gallon inground fiberglass pool with spa. 350lb Sand filter, 1.5 hp pump, and heater

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: what should the Pressure be for sand filter.

    Every pool is different. We can't tell you what is normal for your pool.

    Clean the filter when the pressure goes up 25% over the starting pressure, i.e. if the starting pressure is 20, then clean when it gets to 25.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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