Thanks! Since I was inpatient with the Trichlor I added 4lbs of granular CYA in a sock over the return and 240oz of bleach to get my chlorine levels up last night. Will check my numbers again today when I get home to see where I am at. I believe, based upon the pool calculator, that my CYA should be up to about 30 (after the 3 trichlor pucks disolve and granular CYA gets incorporated into the pool). Since the granular CYA was added last night, which has disovled in the sock and in the pool now will I see my CYA level go up right away or does it take a week to show up on my test kit?