Thanks for the responses. I think I'll get a little creative and see what I can do. Muritaic acid in pools when the pump is off seems to help a little too. It seems to have a greater effect on the alk rather than the Ph. For instance, last week, I put in a gallon of acid. Pooled it in four spots evenly around the pool. The next day I went from 220 to 190 alk, while ph only went from 7.3 to 7.1. I'll give the aeriation a shot and see what happens.