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Thread: SWG, AGP and CH

  1. Back To Top    #1

    Join Date
    Jun 2008
    Location
    NW MO
    Posts
    185

    SWG, AGP and CH

    I think I understand all the other chemistry components of the water with a SWG, but I am not sure I understand the CH component. Everything I read says that CH and vinyl are not even an issue. Then the recommendations for the SWG is minimum CH of 150. My current CH level is 110. Do I need to bring it up?
    24ft AGP 52in deep ~13,500 gal
    Hayward Sand Filter 250 lbs
    SWG
    1.5 HP pump

    425 gal stand alone QCA Hot Tub 15-20 yrs old

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: SWG, AGP and CH

    No, probably not. Low CH levels can sometimes cause foaming. There was a debate a while back about how frequently that is actually a problem. If you have foaming problems that last for more than a week or two, you should raise your CH to at least 150. For most people, CH can be very low without problems in a vinyl pool. I would leave your CH low unless foaming becomes an issue.
    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

    Join Date
    Jun 2008
    Location
    NW MO
    Posts
    185

    Re: SWG, AGP and CH

    Thanks!
    24ft AGP 52in deep ~13,500 gal
    Hayward Sand Filter 250 lbs
    SWG
    1.5 HP pump

    425 gal stand alone QCA Hot Tub 15-20 yrs old

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