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Thread: What is the best and cheapeast calcium chloride (dihydrate) to buy to increase CH?

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    Join Date
    Sep 2015
    Location
    Setauket
    Posts
    35

    What is the best and cheapeast calcium chloride (dihydrate) to buy to increase CH?

    hi,

    My CH is only 40, I need to increase it. Several questions.

    1. My pool is a Vinyl pool, does it need CH to be above 200? If not, will anything bad happen?
    2. Where can I buy the cheapest material? (There was an old 2012 post for a link to homedepot, but it is not valid any more.)
    3. What's the best way to apply the calcium chloride in the pool? In other words, through skimmer, pre-dissolve, or spread in the pool directly.

    if there is any link you can refer me to, please do.

    thank you very much.
    20'x 40' 32000 gallon pool. (built approx in 2001.)
    Vinyl liner (replaced in 2017)
    Pentair FNS Plus 48 DE filter
    AutoPilot Salt Chlorine Generator.
    Pentair Whisperflow pump w/ Variable Speed V-Green 165 Pool Pump Replacement Motor

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    TFP Guide

    AimeeH's Avatar
    Join Date
    Apr 2012
    Location
    Columbia SC
    Posts
    1,837

    Re: What is the best and cheapeast calcium chloride (dihydrate) to buy to increase CH

    With a vinyl lined pool there isn't need to worry about calcium unless it is high enough to cause scaling. I think I've tested my calcium twice in 5 years. First time was under 100 like you. I ignored it.

    Here is a helpful link. Pool School - ABCs of Pool Water Chemistry
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

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