i'm using 3 stage bromine.
a hour ago my tub had a ph of 7.2 after sitting and 7.5 after use. that is with a 60 alkalinity. i've bumped the alkalinity up to 70 a few time but after a week or so it's back down to 60. i just added ph up and i ment to bump it up to around 70 but i got 80 with a aerated ph of 7.8 witch gives me a water blance of +.09
here is my question.
is it better to have a 7.2 ph and when the tub is aerated a ph of 7.5?
or would a ph of 7.4, 7.5 with a rise to 7.8 when aerated be better?