I read some of your Ph discussion

[chem geek]

I know I'm the one who brings up counter-intuitive stuff, but lowering the TA could actually help slow the rise in pH if a large enough component of it is due to ougassing carbon dioxide. So it's hard to tell what's the best thing to do except to experiment (unfortunately, it's hard to lower TA once you've increased it). This is part of the reason it may be helpful to add borates to your pool to have an additional pH buffer with boric acid. Some others on this forum are trying that, so far successfully (see this thread for more info).

Richard

[medvampire]

I agree with Richard about lowering the ALK but for diffrent reasons. I think the outgassing of CO2 is a major player but not the only player. I feel each pool has its own buffering based on the water in the aera, filtration system, and environmental factors.
I found running my ALK around 60 to 70 reduced my acid use to about 1 pt a week from a little over a 1/2 gallon a week
Just remember our pools are diffent and your pool may need a diffrent ALK for a stable pH.
Steve