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Thread: Adding salt to help prevent scalling.

  1. Back To Top    #1

    Join Date
    Apr 2010

    Adding salt to help prevent scalling.

    Will salt adding help to curb potential harm from CH of 500 in 20,000 gallon pool?
    Thinking about 200lb of salt, to balance CSI
    Also, does the salt suspend the calcium or how does this work?
    21,000 Gallons
    Swimquip DES Filter
    In Ground Plaster Pool

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

    Re: Adding salt to help prevent scalling.

    Welcome to TFP!

    Yes, but not by all that much. By adding a lot of salt you can lower the calcium saturation by roughly the same amount that lowering the PH by about 0.2 would, which is roughly the same as lowering the CH level by 190. (All numbers approximate.)

    Usually preventing calcium scaling is done in other ways, typically by lowering TA and/or PH. But I suppose that raising the salt level could be used as part of an approach to preventing scaling. However, you don't want to raise the salt level too much or you can have corrosion issues. You want to keep salt below 6000 ppm to avoid salt related problems.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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