Why would the pool construction make any difference? I lower TA (tapwater 250) so I don't have to fight it all the time to hold the pH down. Even then, it's mostly a matter of how much acid is used at the frontend to lower the TA, versus how much is used over the course of the summer to maintain pH, which tends to creep upward. Since I'd rather handle less acid less often, lowering the TA gets that handling done mostly in one effort.

BTW, I used the aeration method with great success last summer to drop it down from 250 (after a complete refill) to about 100. Testing this spring, it was down around 50. In an aquarium the water is considered adequately buffered at about 60, and there we are dealing with live animals in a small container.