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Thread: Calcium Hardness question

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    Calcium Hardness question


    I've been testing my pool and get no CH (calcium hardness).
    Vinyl in-ground pool.
    Is there any reason to add CaCl2 to bring this up, or OK to let it be low?
    22,800 gal. seasonal, in ground vinyl pool, 18 x 36 x 8 deep 20 mil Garrett vinyl liner
    Teledyne Laars LLD natural gas heater, Sta-Rite sand filter, WhisperFlo WF-3 230 V 3/4 HP Pump
    Cover Pools SAVE-T COVER II®
    Taylor K-2005C kit, borax / bleach.

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    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Calcium Hardness question

    Low CH is no problem with a vinyl pool.

    That being said... it's rare to show nothing. There was a bad batch of the purple reagent recently, you might have a bottle of it.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Calcium Hardness question

    Does the sample turn blue as soon as you put the R-0011L in it. If it does, you have zero CH.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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