Doug,

Wait for others to reply, because I'm learning too. But I think you should add an initial dose of CYA rather than relying on the pucks. Michael's BleachCalc calculator suggests 10 lbs or so to get your CYA up in the 30's.

Did the pool store really report your total alkalinity at 50 today, and 110 yesterday? Something seems wrong there. Using Ben's test kit gives me very consistent TA results.

It also seems odd that they reported lower calcium hardness today, after you added the "Hardness Plus" they recommended yesterday. My general recommendation is: test it yourself! I value my pool store, but am having better results from my own testing and adjustment using information from this forum.

Rick