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Thread: Winter closing IG BBB Safety Cover - Best Chemical Balance prior to closing?

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    Question Winter closing IG BBB Safety Cover - Best Chemical Balance prior to closing?

    My first post. I use BBB. My pool is inground cement with epoxy paint over concrete. I use BBB method. Well Water, some iron. This year have only added CYA in the spring, liquid bleach 12 %, and muriatic acid to lower ph.

    My pool is approx 28x18 inground kidney shaped.

    Current CYA 30, Chlorine shock level, PH 7.8 Calcium 140 Water 75F

    I will be closing next week, putting on solid safety cover.

    Finally the question,

    What is the best chemical level prior to closing?
    Last edited by PoolDoc; 08-16-2012 at 03:28 PM. Reason: turn signature on
    18x28 kidney 16.4K* gal IG painted concrete pool; bleach; starite sand filter; hayward super 1 hp 1 speed pump; 6 hrs; gas heater; taylor dpd; well; summer: none; winter: solid safety; android phone; PF:7.3

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    Default Re: Winter closing IG BBB Safety Cover - Best Chemical Balance prior to closing?

    With iron laden well water, there are a number of issues you need to address.

    Please complete the Pool Chart; it makes it MUCH easier to answer questions well:
    Pool Chart Entry Form
    I'll check back this evening.

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    Default Re: Winter closing IG BBB Safety Cover - Best Chemical Balance prior to closing?

    I have done the chart.

    I actually did out before I started the thread, but I have just done out again. re: the iron in my we'll water, I do not have rust stains in my pool. I have had high ph all summer but we have had almost no rain.

    thx for your help
    Last edited by PoolDoc; 08-16-2012 at 03:32 PM. Reason: turn signature on
    18x28 kidney 16.4K* gal IG painted concrete pool; bleach; starite sand filter; hayward super 1 hp 1 speed pump; 6 hrs; gas heater; taylor dpd; well; summer: none; winter: solid safety; android phone; PF:7.3

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    Default Re: Winter closing IG BBB Safety Cover - Best Chemical Balance prior to closing?

    Please note the corrected gallons figure, based on the dimensions you supplied. Kidney volume is always a bit of a guess, but the volume shown is for 90% of an enclosing 18x28 rectangle.

    You didn't list your TA level, but you probably want to have your TA between 100 and 130 ppm, and your pH a bit lower.

    But, the real key is making sure nothing grows -- if you get slime or algae growing, your chemistry will change, no matter what you set it at now.

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