Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: What psi should my pump/filter run

  1. Back To Top    #1

    What psi should my pump/filter run

    Newbie with used pool here, and I have questions about my pump and filter setup. I have a jacuzzi 1 hp pump with a 17" 150 lb sand filter. What should my psi run, and at what psi should I backwash. The previous owner couldn't find the paperwork for it. Thank you all in advance.
    [i][color=#BF0040]27' x 52"....1.5 HP hayward pump 200lb sand filter.....finally building our deck :)

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD
    The clean filter pressure varies from pool to pool. You should backwash when the pressure goes up by 6 to 8 psi from where it is when clean.
    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

  3. Back To Top    #3
    Thank you JasonLion. Clean it is running 15 psi, so I will backwash before 25 psi. Thanks again.
    [i][color=#BF0040]27' x 52"....1.5 HP hayward pump 200lb sand filter.....finally building our deck :)

  4. Back To Top    #4

    Join Date
    Apr 2008
    Central Texas
    That sounds reasonable. My DE filter runs at 13 PSI just after a backwash, then I backwash again once the pressure gets into the 20-22 PSI range.

    I have noticed that since I added the borax and am using bleach that my filter doesn't need backwashed nearly as often.
    26,000 Gallon Gunnite IGP
    2 HP Challenger High Head Pump
    60sf Nautilus DE filter
    Polaris 280

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts