Thanks. I plan to leave just monitor it for a few days. Daughter is having the same friends over later this week for a repeat, so assuming the 7.8 holds I may drop PH/alk again before they come and go from there. I'm down about 1.5" on water level, but we've had more rain overnight and again this morning so It may not be as bad now. Plus, the excessive heat has passed, so hopefully evaporation will slow.

On the flip side, school starts in about 2 weeks, and from past experience pool use really slows, so it would be good to get to a stable environment.