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Thread: Tryed the search...

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    Tryed the search...

    How long will chlorine last 6% 10.5 & 12. I know I saw it here so0mewhere just cant fined..
    33x52 AGP 25600 Sand filter 1.5 HP Hayward

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    Join Date
    Feb 2008
    Flower Mound, TX

    Re: Tryed the search...

    It varies. What you need to remember is that the higher the concentration of sodium hypochlorite there is in solution, the less stable it is. So, storing 6% and 12.5% side by side, the 12.5% will lose its strength a little faster. If you keep it in a cool and dark place, the 12.5% will last you a few months.
    10K gallon IG gunite with waterfall; Pentair CC320P filter; WhisperFlo 2 HP pump
    TF Test Kits - Pool Math - Pool School
    "It depends."- JohnT

  3. Back To Top    #3

    Join Date
    Jan 2009
    Cupertino, CA

    Re: Tryed the search...

    You are probably thinking about this chart of chlorine half-life based on initial strength and ambient temperature.
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

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