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PH keeps rising daily


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I have a 1600 gal swim spa i recently drained and changed to bromine. TA is about 80ppm and bromine is usually around 5 but lately i have to add muriatic acid (about 1/3cup) each day bec PH seems to climb each day. Any ideas? I do also see phosphates testing high but get mixed reviews as to how important that is. Thank you


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On 11/18/2021 at 4:17 PM, RDspaguy said:

Aeration raises ph. Close air controls when not in use.

There are many threads on this subject. I suggest you search the site for this topic.

Thanks for the reply Ill try that. I did search quite a bit but a lot of the scenarios didnt seem to match mine such as issues w high TA. Youre idea makes sense. Thanks again

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