Quote Originally Posted by jhm View Post
Thanks for all the advice. It sounds like I need to work on the TA by lowering pH to around 7.0 for a while. Aeration shouldn't be a problem as we have these things on a couple of returns called Baja Bubblers, giving a fountain type effect. Hmm...maybe those might contribute to my continually rising pH?
Yup. Turn them off for a week and see what happens! Bet pH is far more stable.


Does high pH have any effect on chlorine consumption?

Thanks,

Jim
I don't think it does, (the chem gurus can chime in) but it DOES have an effect on the effectiveness of chlorine...the lower the pH the more effective the chlorine is. But at super-effective levels, your water will be acid enough to melt vinyl (which you don't have).

I tend to prefer pH in the 7.3-7.5 range for just hat reason. Chem_Geek has tables on that --if you dig around you may find them.