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Thread: Calcium hardness

  1. Back To Top    #1

    Join Date
    Jun 2011
    Kenton, TN

    Calcium hardness

    Hello Friends,

    My CH reading is 0 and I have an above ground vinyl liner pool. Seems like I remember reading that CH is most important in concrete pools where leaching will occur if the CH level is too low or with cloudiness if the CH level is too high. Do I need to worry about getting my CH level to the recommended 50? I use the good test kit I ordered from y'all and I repeated the test for accuracy.

    Thank you for your help.

    22000 gal AG vinyl liner
    Kenton TN
    Cheryl Reddin
    Kenton, TN
    21200 gal., AG vinyl, ? HP, two speed Millennium A.O. Smith Century Lasar pump, sand filter

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

    Re: Calcium hardness

    There is no known reason to add calcium to an above ground pool. The minimum is listed as 50 because we don't have enough experience with levels below 50 to be absolutely sure what will happen, still there is no reason to suspect that there will be a problem.
    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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