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Thread: Help with balancing

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    Help with balancing

    CL: .5-1
    PH: 8.2
    TA: 10000
    CH: 2500
    CYA: 55

    20000 gallon plaster
    Trying to close my pool tomorrow. I haven't backwashed for a few weeks. Should I backwash and add some DE before close. See my ph is to high what should I use.
    33x16 (21,000 Gallons) Vinyl Inground Pool, 1/2 HP Whisperflo, Hayward Sand Filter, Pentair Mastertemp 300, 1 AquaLamp, 1 Skimmer, 1 Main Drain and 4 Return Jets...Maintained with BBB Method

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    Join Date
    Mar 2010
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    Re: Help with balancing

    Use Muriatic Acid to bring down your pH. I am sure others will be along to help you out a little more.
    13,000 Plaster IG Pool approx
    Hayward C5030 Cart Filter
    Emerson 1081 EB653 1.0 HP 1.40 S.F. 3450 RPM
    Pool Calculator, Pool School, TF Test Kits

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    JasonLion's Avatar
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    Re: Help with balancing

    How did you get those test results? TA can't possibly be 10,000, and CH at 2,500 seems rather unlikely. That makes me suspect the other results as well.

    If your PH is really 8.2, you need to bring it down to around 7.2 before closing.

    You should backwash the filter right before closing and then turn off the pump without adding any more DE. After closing you should open up the filter and do a through cleaning.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Help with balancing

    Alk is 100ppm
    CH is 250ppm
    Have the TF-100 test kit.
    If I use muriatic acid won't that lower my alk where my alkalinity is right where it needs to be?
    33x16 (21,000 Gallons) Vinyl Inground Pool, 1/2 HP Whisperflo, Hayward Sand Filter, Pentair Mastertemp 300, 1 AquaLamp, 1 Skimmer, 1 Main Drain and 4 Return Jets...Maintained with BBB Method

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    JasonLion's Avatar
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    May 2007
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    Re: Help with balancing

    Acid does lower the TA, but not usually by all that much. The recommended TA levels are either 60-80 (SWG) or 70-90 (otherwise), so lowering TA is probably a good idea. In any case keeping the PH right is a much higher priority than keeping TA right. Get the PH to where it should be and then adjust TA if needed.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Join Date
    Mar 2010
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    Spring, TX
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    Re: Help with balancing

    I have found for me 90 for TA is a good fit.
    13,000 Plaster IG Pool approx
    Hayward C5030 Cart Filter
    Emerson 1081 EB653 1.0 HP 1.40 S.F. 3450 RPM
    Pool Calculator, Pool School, TF Test Kits

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