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Thread: rain water

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    rain water

    does a heavy rain cause any change in pool rained real hard today, and pool looks like it has a greenish tint...not sure if it was caused by all the tree pollen that fell in or something else..

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    KurtV's Avatar
    Join Date
    Mar 2007
    SE Louisiana
    It will probably lower your pH (all rain is acid despite what you hear on the news; some is just more acidic ). It may introduce dirt and organics that need to get oxidized by your chlorine thus increasing chlorine demand.

    Your test results will tell the tale. Post a full set of numbers and the experts here will help you interpret. Post free and combined chlorine, pH, alkalinity, CYA, and calcium hardness. A chlorine test tonight and one tomorrow morning before the sun hits the water would be especially instructive.

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