CarlD,

Can you explain why the Chlorine needs to be increased if the CYA is higher? Is it to make more Chlorine readily available to kill germs?
What if I take a little water out of the pool and refill? (just wondering)

Ok, I will tackle this later and run another CYA test when there is some sun out...

I am off to work

Thanks for your help MUCH APPRECIATED!!!

Michelle