The water in our hot tub circulates with the main pool via spill over. It also contains 1 of the 5 total returns (4 in the pool). The question is, will turning on the 4 jets in the hot tub achieve the aeration I need to lower my total TA? pH is currently 7.2 (down from 7.8). I aerated in this manner for about 4 hours, but suspect this wasn't nearly enough as I didn't' notice a rise in pH. Has anyone ever been successful with this method? Maybe I'll run overnight to see...any feedback would be greatly appreciated!