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Thread: Back Washing Frequency II

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    Shirker's Avatar
    Join Date
    Jul 2014
    Athens, GA - USA

    Back Washing Frequency II

    My filter pressure is not changing much (150 pound sand). On low, the psi stays around 4 and on high it hovers around 16psi. I vacuum and backwash weekly but if my psi stays normal is it ok to go longer between backwashes? Pool is crystal clear (knock on wood) and my CC is usually measured at zero. I have one of those mesh sock thingies in my skimmer basket to catch the really small debris.

    Thanks in advance for your help!
    TF-100 | 13.6k gal (24' Round) AG | Chlorine | Sand Filter | Two Speed Motor | Installed June 2014 | Last Opened April 24 2016

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    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    SW Indiana

    Re: Back Washing Frequency II

    No need to do routine backwashes without a pressure rise. The only time I backwash my filter except at opening and closing is when it rains enough that I need to lower the water level.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

  3. Back To Top    #3
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    East Texas

    Re: Back Washing Frequency II

    No need to backwash until normal pressure rises at least 25% or return flow is really decreased.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

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