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Thread: Sodium hypochlorite and PH levels

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    Default Sodium hypochlorite and PH levels

    I’m putting this is the chlorine section because that is the only thing I have added to the pool since I opened it, not counting the spring opening kits from Leslies.

    My concern is really about PH. Will sodium hypochlorite raise the PH level, all other things being equal?

    I ask because the PH has risen from 7.6 to 7.8. The only other thing I know of that has entered the pool is some rain on Friday night, about a half inch according to the weather man.

    Thanks
    Circa 1980 IG, VL, 36K Gal, DE, Chlorine

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    aylad's Avatar
    aylad is offline SuperMod Emeritus Burfle Ringer aylad 4 stars aylad 4 stars aylad 4 stars aylad 4 stars aylad 4 stars aylad 4 stars
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    Default Re: Sodium hypochlorite and PH levels

    It will cause a very temporary increase, but as the chlorine is broken down by stuff in the water, the byproducts negate the higher pH, so as an end result it shouldn't change.

    If you have any aeration (a heavy rain that bubbles at the surface, or splashing kids in the water, would do it) in the pool, or a SWCG, those are common culprits for rising pH, as well as higher pH in fill water.

    Janet
    Janet

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    Default Re: Sodium hypochlorite and PH levels

    Oh yeah aeration. It had to aerate the pool during that rain Friday night.

    Thanks J.
    Circa 1980 IG, VL, 36K Gal, DE, Chlorine

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    Default Re: Sodium hypochlorite and PH levels

    That's it. Just that simple. Bleach/LC is effectively pH neutral. The ONLY thing it adds is a little bit of salt, but 10 years of using bleach won't even begin to put enough salt in the water for a salt water chlorine generator to operate.

    Carl
    Carl

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    Default Re: Sodium hypochlorite and PH levels

    Quote Originally Posted by CarlD View Post
    That's it. Just that simple. Bleach/LC is effectively pH neutral. The ONLY thing it adds is a little bit of salt, but 10 years of using bleach won't even begin to put enough salt in the water for a salt water chlorine generator to operate.

    Carl
    Thanks Carl.
    Circa 1980 IG, VL, 36K Gal, DE, Chlorine

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    Default Re: Sodium hypochlorite and PH levels

    Okay I’m starting to freak out a little. Aeration raises pH. That must have something to do with oxygen. If the pH keeps going up, at what level do I act to bring it down? What’s the tipping point?
    Circa 1980 IG, VL, 36K Gal, DE, Chlorine

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