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Thread: Low CH

  1. Back To Top    #1

    Low CH

    Hi All,

    My CH is 200. I think I understand that this can be bad for the equipment and metal. Would the low CH be causing a yellowing on my white pool steps? I also notice a more distinct dirty line at the water line on these same white steps. I don't remember this happening last year. Also, any advice on how to clean this up?

    Here are my other numbers:

    fc 6
    ph 7.4
    ta 75
    cya 45

    27K gallon, IG vinyl pool, SD80 Sand Dollar sand filter-Michigan, 1hp pump

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Low CH

    You misunderstand. Low CH does not mater for anything besides plaster and grout. You could have 0 CH in your vinyl pool with no issues.

    Yellowing could be due to metals in the water.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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