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Thread: Some ph and alk questions

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    Some ph and alk questions

    Hi,

    A newbe here on pool care. Been fighting the green goop for about 3 weeks and now I think iv'e killed it all used clarifier, algeacide, brushed the pool and just need to vac it. After testing everything seems to be ok but the ph and ta....last readings are below. I will be getting the acid tomorrow to lower the pH etc. The pool is plaster, tile trim, cement deck, irregular shape but close to kidney, about 15000 gal
    My questions: Are the test strips with the multiple indicators reliable. 2. Will a floating fountain provide enought aeration or can I use a submersible pound pump that moves 1200 GPH that has a fountain attachment. 3. Can you swim in this pool with these readings?

    FC 3
    TCL 2
    Alk 200
    CyA 120
    pH 7.8
    TH 450

    Thanks for any help
    impvme
    in ground plaster kidney ~15500 gal, Pentair Clean & Clear Plus 240, Whisper Flow 3/4hp, dedicated pool cleaner w/booster pump mod# PB4, pool - 20+ yrs, pump, filter and booster ~9 yrs, Polaris 380 pool sweep(~15 yo).

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    dmanb2b's Avatar
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    Re: Some ph and alk questions

    Quote Originally Posted by impvme
    My questions: Are the test strips with the multiple indicators reliable. 2. Will a floating fountain provide enought aeration or can I use a submersible pound pump that moves 1200 GPH that has a fountain attachment. 3. Can you swim in this pool with these readings?

    FC 3
    TCL 2
    Alk 200
    CyA 120
    pH 7.8
    TH 450

    Thanks for any help
    impvme
    Welcome to TFP
    1) No
    2) Just continue lowering PH to 7.5 with acid and TA will come down over time. Aeration raises PH and does not affect TA.
    3) you can, but I wouldn't as I'm not convinced your done shocking.

    with CYA at 120.(if that's even close to correct) FC should be around 10pppm and CC 0.5 or less and you should be able to pass the overnight fc loss test.

    Take a read through pool school (button on upper right) and strongly consider getting a test kit such as the TF100 or Taylor K2006. They are recommended here and compared in an article in the school
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

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