I just checked and the Cl is 5+ (even more yellow than the top color) and pH is 7.5. Will run the pump all night and see if it is less green in the morning. Hayward got back to me and, for the record, I have a 1.5 HP Hayward Super II pump.

Thanks so much to everyone today for all their help! Can't wait to get the kit to find out what the CYA level really is.... and what I need to do from here.