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Thread: Proper order of adjustment

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    Proper order of adjustment

    Hi all
    First post from a Newbie although I have read this site often and you all are really helpful.
    My question is not so much about proper level in my vinyl pool, which this site has already told me, but rather in what Order I should adjust them. I have a 30k gal vinyl in ground pool.
    My current values are:
    Ch 110
    Ta 65 (always tend to low)
    Ph 6.7
    These are my pre open values and expect to open in 3 weeks.
    Last year had some metals staining on steps but water right now tests with no copper or iron but I do expect to see metal stains when I pull off the cOver.

    So what is the right order? Assume I should adjust all before worrying about chlorine but not sure whether to start with metals, ch or ta.
    40 x 20 Freeform vinyl 30k gallon, heat pump, Hayward sand filter using zeosand, fiberglass spillover spa.

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    Re: Proper order of adjustment

    Should have also mentioned in my question that I have a heat pump and pool is 4 years old so mainly plastic plumbing.
    40 x 20 Freeform vinyl 30k gallon, heat pump, Hayward sand filter using zeosand, fiberglass spillover spa.

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    dmanb2b's Avatar
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    Re: Proper order of adjustment

    Welcome to TFP Always adjust PH first. If the PH is truly 6.7, I would get that done now, up to at least 7.2. If you continue to find your PH dropping, you may have to raise your TA a bit (75 or so) with baking soda, unless you are using trichlor pucks, which may be causing your low PH. CH at 110 in a vinyl pool is just fine
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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    Re: Proper order of adjustment

    Thanks!

    Glad I asked since I would have hit ta first THEN ph.

    110 ch is ok even with the heater? Must admit I enjoy the debate on this one!
    40 x 20 Freeform vinyl 30k gallon, heat pump, Hayward sand filter using zeosand, fiberglass spillover spa.

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    dmanb2b's Avatar
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    Re: Proper order of adjustment

    If the heater manufacter warranty requires a certain CH level, then you should obide by that Personally, I would think that when it comes to heaters, you don't want much calcium at all. I live in a High CH water area (330+ppm...So I would love your CH level in my pool or home) If it wasn't for my water softener, my hot water heater would be fouled up in a few months time

    PS the reason for adjusting PH 1st is that it has an effect on TA, so raising PH will likely raise your TA level. Borax has less of an impact on TA while PH+ has a more significant TA side-effect.
    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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    Re: Proper order of adjustment

    Thanks again. I'll be using bbb for the first time this year.
    40 x 20 Freeform vinyl 30k gallon, heat pump, Hayward sand filter using zeosand, fiberglass spillover spa.

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