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Thread: False calcium hardness test.

  1. Back To Top    #1

    Join Date
    Feb 2012
    Location
    Stowe, VT
    Posts
    59

    False calcium hardness test.

    Can anybody help explain where my calcium test is going sour in my hot tub? I'm hoping that I just have too much bromine, but I don't ever recall having an issue with a high range level like this before. Unfortunately I'm not use to dealing with bromine yet.

    Bromine: 9
    pH: 7.7
    Alk: 60
    Temperature: 100 F

    New water as about 2 weeks. Have not used any MPS so far. The tricky part is that it's not actually turning blue after adding R-011L, it stays clear.
    69,000 Gal gunite indoor IG pool.
    5 HP Emerson - Pentair Triton II Commercial TR140c Sand Filter x2
    5,000 Gal gunite outdoor IG hot tub
    2 HP Sta-Rite - Pentair Triton II Commercial TR140c Sand Filter

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: False calcium hardness test.

    That means your R-0011L has gone bad. If the R-0011L was good it would turn some color or another.
    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
    Feb 2012
    Location
    Stowe, VT
    Posts
    59

    Re: False calcium hardness test.

    Dang I feared such, but didn't want to toss it just in case. Thanks for the confirmation.
    69,000 Gal gunite indoor IG pool.
    5 HP Emerson - Pentair Triton II Commercial TR140c Sand Filter x2
    5,000 Gal gunite outdoor IG hot tub
    2 HP Sta-Rite - Pentair Triton II Commercial TR140c Sand Filter

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