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Thread: Sun and chlorine usage

  1. Back To Top    #1

    Join Date
    Jul 2015
    Charter Oak, California

    Sun and chlorine usage

    Maybe a simple question with an obvious answer but here chlorine used up in pool water when the day is overcast or is it only used up when the pool is in direct sunlight? Or, is some used up when overcast and more with direct sun? I think I understand that CYA level has a bearing on how much or how fast it is used up...Just stretching my chemistry wings...

    thanks, Bob
    Bob (AKA Schnozz)
    12 x 24 x 52 Intex Ultra Frame AGP, 8600 Gal; 1/2 HP Intex Pump 1600 GPH; 12" Sand Filter, Intex in pool skimmer; Intex Automatic Cleaner (Fantastic); K-2006 Test Kit; Start-up 07/30/2015. First Time Pool Owner in SoCal.

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

    Re: Sun and chlorine usage

    Can you get a sunburn when it is overcast? Yes, so there is at least some penetration of the UV into the pool breaking down the FC when it is cloudy.
    Jason, TFP Moderator
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