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Thread: Help! High calcium

  1. Back To Top    #1

    Join Date
    Jul 2007
    Location
    Portsmouth, Virginia
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    17

    Help! High calcium

    I hope there is a better options than replacement. My CH is 620!

    Miscalculated CH test at opening and added too much calcium.

    Is there ANY solution other than draining water to get my CH down? Please!
    15 x 30 Sharkline AG pool, Pentair cc100, Pentair 1hp 2-speed, Liquidator.

  2. Back To Top    #2

    Re: Help! High calcium

    The only other option I have read about is lowering TA and watching your ph closely. Personally I would drain 50 percent water and replace.
    coloeb,
    20k gal. IG fiberglass/plaster rectangle 32'x16'
    Hayward Superpump 3/4 H.P. primary Hayward model 5060 Booster Pump
    Hayward Pro Series High Rate Sand Filter
    Pentair Model 320 automatic Chlorine/bromine in-line feeder

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    Melt In The Sun's Avatar
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    Oct 2009
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    Tucson, AZ
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    3,899

    Re: Help! High calcium

    Agreed; you can manage water that high by keeping low pH/TA, but I wouldn't do it unless I had no choice. I presume your fill water isn't too hard in Virginia?
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
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  4. Back To Top    #4
    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    Re: Help! High calcium

    There are three approaches.
    1) Leave CH high and lower PH and TA to compensate. This approach is the easiest to start doing, but it has risks. If you let your PH get away from you even once and it goes too high, there can be calcium scaling. Over time the CH level will come down as water gets splashed out, overflows, or is otherwise replaced.
    2) Replace water to get your CH level down.
    3) Get a reverse osmosis treatment to lower the CH level (and all your other levels).

    Replacing water is going to be your best choice in most cases.
    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

  5. Back To Top    #5

    Join Date
    Jun 2010
    Location
    Rocky Mount, NC
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    9

    Re: Help! High calcium

    There is a product called Cal-Treat by United Chemical Co . Don't know if it works or not. I'm sure replacement is best.
    8,000 gal Splash Vinyl Pool - 13 x 21 ft - AG (IG 2 ft) - Sand Filter - Hayward Flo LX pump

  6. Back To Top    #6
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
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    37,879

    Re: Help! High calcium

    I don't know about CalTreat in particular, but many similar products have all failed to work.

    You can use sequestrant to minimize the chances of scale forming, but that can get expensive.
    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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