This is the first year for closing the pool. I've read the pool school article on closing an AGP. My question is, what would be the effect of closing before the temp gets down to 60 deg? My CYA level is currently pretty low (<20) and I'm leaving the solar cover off to allow the temp to drop, however it's really going through the liquid chlorine right now. Appreciate any help. Water temp is currently 74 deg and has been pretty steady the last 5 days or so. Also, should I use Polyquat or just liquid chlorine? Thanks.