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Thread: Salt lowers freezing point

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    Join Date
    Jul 2013
    Swartz Creek, MI

    Salt lowers freezing point

    Just curious...would the concentration of salt in a pool lower the freezing point enough that it could aid in freeze protection?

    It doesn't apply to me because I have to winterize in Michigan but I don't think I've seen any discussions about it.
    45ish year old, 16x32, 19,000, IG, Concrete/Fiberglass Hybrid in need of restoration
    Sand filter with 3/4 hp AO Smith pump. 1 skimmer, 1 main drain, 1 return

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

    Re: Salt lowers freezing point

    Just a tiny bit, not enough to make any difference.
    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
    Mar 2007
    San Rafael, CA USA

    Re: Salt lowers freezing point

    This was discussed and answered in this thread.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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