Split from another thread for better visibility.
This year, Pool has been open about 30 days, Intellchlor 40 is running at level 5 and my FC is 2.5, no CC, CYA 70, PH 7.4, total alk 180 (little high). That is the readings from my test kit.
Pool water is 83. Pool water clarity is great, no visible signs of issues around the pool, no debris, etc. The lights were left out over the winter and there's no debris coming off the housing when I brush them (unlike last year).
Up until late last year I ran the IC 40 at 3 and never had a problem. I have taken off the IC 40 and it is producing chlorine (foams).
Thoughts here? Im pretty shocked that this pool is not holding chlorine.