Ok, I know that it was on here somewhere. I am trying to figure out how much CYA a 3" tab will add to a pool. Had to add a large amount of water to the pool due to a leak issue. I have some tabs lying around here and I am looking to use these to raise CYA and I am getting ready to go on vacation. I thought maybe I would kill two birds with one stone. There was a topic on here that showed how much chlorine and CYA each tab added. Any help would be much appreciated.