How fast does CYA rise per 3" puck per 10K gallons? I am switching to liquid 6%, but I have a few pucks left. My auto chlorinator is set at "3". I have 1 more week of pool service before I take over(they are using liquid). I just drained 50% to get my CYA down to 65. Should I just turn the chlorinator to zero, or let them run out and not add more?