constant ph battle

[jhm]

If I raise my TA, I'm actually in better shape according to the index.

After playing with the calculator a little more, I'm thinking maybe it would be better to raise my CH to about 300 (250 now). Then I can leave the TA where it is (but not let it fall lower) to help from raising pH.

Any thoughts?

[chem geek]

Yes, it would be better to raise the CH rather than the TA when your pool has a tendency for the pH to rise. Keeping the TA lower should help slow that down while raising the CH will protect your plaster surfaces by having the saturation index closer to zero.