My pool is 33,000 gallons, vinyl liner, 20 X 40. The water looks great but after testing the water with my taylor tester, the chlorine test was orange - off the chart. When I tested the chlorine with 087 powder, it was 25. The pool store said the FC was 10 - which makes sense (that the water looks great) since the CYA is 100. According to my testing it is 90.
FC - off the chart
CC - 0
CYA - 90
PH - 7.6
TA - 100
I use trichlor pucks in an auto chlorinator- which has been turned off for three days. We had 1 day of heavy rain and I added (a small amount of water), but only a slight change in chlorine. I know I have to get the CYA down to at least 50 and chlorine down to 5. This has never happened before. We have a new chlorinator and had it set too high for 1 day, but did not expect to see chlorine so very high. I can't remember seeing the test turn orange even after shocking.
Any ideas of what could have caused this or suggestions to get the chlorine down?