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Thread: Backwashing My DE Filter with a 2 Speed Pump

  1. Back To Top    #1

    Join Date
    Apr 2009
    Location
    Virginia Beach, VA
    Posts
    26

    Backwashing My DE Filter with a 2 Speed Pump

    I have a Whisperflo 2 two speed pump (1.5/.5 HP). I typically backwash on low speed, but I'm not sure if I can use high speed. It seems like high speed would do a much better job dislodging the sludge, but I'm afraid it could damage the grids.

    Can anyone tell me if it's okay to backwash my DE filter on high or if I need to keep it on low?

    Thanks!
    Andrew - Virginia Beach, VA
    22,000 gallons; 16x32 rectangle; 3.5Ft-8Ft Depth; Pentair Whisper Flow 2 speed Pump 1.5/.5HP; Pentair FNSP60 DE Filter; Aqua Rite SWG. Polaris 180 cleaner.

  2. Back To Top    #2

    Join Date
    Apr 2008
    Location
    Central Texas
    Posts
    326

    Re: Backwashing My DE Filter with a 2 Speed Pump

    Seems to me that high speed would do a better job of cleaning the grids. Our pool has a 2.5 HP High Head Challenger pump and it cleans out the DE filter quite nicely. 8)
    26,000 Gallon Gunnite IGP
    2 HP Challenger High Head Pump
    60sf Nautilus DE filter
    Polaris 280

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: Backwashing My DE Filter with a 2 Speed Pump

    Yes, you can backwash on high speed.
    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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