Thanks waterbear. My TA tends to drop over time, so I can just not adjust it whenever it falls to 70, then. I'll hit the nearby pool store this weekend to pick up whatever it is that increases calcium. And I'll up my FC a little beyond 3, and see if the pink slime stays away (actually, it's already 6.0 because of when I hit the Boost button; I tamped down the SWCG % ontime just 10% following the Boost, so the FC would fall very slowly, which it has). I'll try keeping FC no less than 5% with the higher CYA level.

I looked over my pool records today. My pH rose 0.05 per day over the last 10 days, where the waterfall wasn't running, where I had my pool covered, and where the water temp was between 81 and 77. That's a slower pace than when my pool is uncovered and the waterfall is running; that's when I see up to a 0.1 rise per day (sometimes it's a little less than that, actually, but it's very close to 0.1).

This morning I uncovered the pool where the pink slime had been earlier; no pink slime visible from above the surface of the water. I'll uncover the pool this weekend and examine everything more closely to see what's going on.

Thanks again!