Thanks for tips. I'll double check my procedures. I'm not all that worried about CC as the FC drop per day is only about 0.5.

Keeping the pH in range has been a bit more of a challenge as I'm trying to raise the CYA. I've noticed the test results tend to go further than my expectations when adding chems. This makes me think I'm over estimating the water volume in the pool. The shape of the pool angles inward below 3 ft. The deepest part is only about 10 to 12 ft. sq. So, I think I'll adjust my calculations.