I've read the post about adding Acid (drop the PH 7.0-7.2) then aerating to raise PH to lower TA. I don't need to aerate because my SWCG is doing a great job aerating. My TA is 135ish and it's coming down slowly. My PH climbs a .1 every 2 days or so. I'm using about a gallon of acid a week or so (80 ounces takes it down from 7.8 to 7.2).
The pool calculator numbers are pretty close.
The pool water looks and feels great. I'm thinking about building the acid adder I read about http://www.troublefreepool.com/homem...stem-t4174.htm