With your CYA that high, the only way to get rid of the green is to shock the pool up to 25 ppm and hold it there until the pool clears up. Whatever form of chlorine you use is fine, except that I wouldn't use anything else with stabilizer in it....we really recommend plain, unscented bleach or liquid chlorine, as Yeggim suggested. The Polyquat isn't going to do much for you now, but you can use the dry acid to lower the pH til it's between 7.0 and 8.0 (do that before shocking the pool, because you'l get falsely high pH readings with very high chlorine levels).

I agree with Yeggim to not use the copper--we've already talked about why.

Janet