I mostly understand the relationship between Ph and TA and it seems like the majority of people are constantly trying to lower both levels and keep them balanced - at least in southern California. I have a 3 month old pool so im knocking down Ph to 7.4/7.5 pretty much every 6 days as it climbs to 7.9ish. Got my TA down from 100 to 70 with the method suggested here with no problem. now for my question, does TA typically follow the same cycle i've noticed with Ph? it seems more stable and rises slower, but now its down to 60 because im knocking down Ph so often. im worried this trend will continue and TA will drop out of the low end of the suggested range - i could just be splitting hairs - but does TA typically rise at the same level as Ph or am i just looking at the numbers too hard? i read not to focus on TA just to get a number...but i like numbers! hahaha! also, i have a small overflow waterfall on my spa to pool, should i minimize that to decrease aeration and slow ph rise?