Following up: Tested today and here are the results:

Chlorine: 7ppm
pH: 7.4
Alk: turned barely pink at 210, very pink at 220
CYA: barely above the 40 line, but I will retest in a couple of days - just added stabilzer on Sunday

Should I adjust pH up a bit? If so, how? I've never had to adjust it up before - I usually have the opposite problem. Is the Alk a little high? If so, when I add the muriatic acid, I guess that would mess with the pH too - pushing it down, right? Then I should bubble the pool?

Please advise. I'm on such a good track - I really want to get it right.

Thanks!

Jenn