I'm a new pool owner and have had it open about a week or so. I've been monitoring my levels daily with both test strips and a Taylor test kit. My Fc and TC levels are even but fairly high, but I think that is ok since my CYA is 80 which already seems high to me. I've had 3" pucks in there since its been open but want to make the switch to bleach to avoid having the CYA levels continue to rise. I also have a sand filter which will be back washed every week. Will that help to keep the CYA levels constant or even lower a bit? Is there any special way to start using bleach and should I completely stop with the pucks? Any advice would be great.