Just want to clear up a couple of things...

The pucks do contain CYA, but the CYA will NOT build up quickly enough with just pucks to help you keep chlorine in a green pool. You do still need to keep slugging the bleach in there. The pucks will also help lower the pH, but the bleach has a high pH, so the bleach is not going to contribute to a pH drop--in fact, it may raise it, although by a negligible amount. So chlorinating heavily will NOT cause you to "plummet into acidic range". Also, the CYA does not lower pH--the only thing you've added so far that will lower your pH are the pH decreaser and the trichlor pucks.

In addition, you need to wait closer to a week or so before you retest for CYA or backwash your filter--the CYA sits on your filter and dissolves VERY slowly, so if you backwash earlier than at least 4-6 days from now, you're just going to wash your CYA right out the drain.

Forget their advice for now for lowering alk--your alk is fine where it is, and the method they've told you to use will not work. If you need to lower your alk in the future, look at the sticky at the top of the Alkalinity forum for the steps to lower it. Recommended range, though, is 80-120 ppm, so you're fine just where it is.

Keep at the bleach!

Janet