I tested this morning after adding some chemicals two days ago. There is .5 ppm of FC now. I have no clue why this happened all of a sudden. Any help would be appreciated. My SWG has been set on 25%. Do I have chlorine lock from the high CYA? I've had CYA of 90 before with no issues).
Logs before additions, ~3 days ago
FC-2.5ppm (added 21 oz. 10.5% liquid chlorine)
CC-0
PH-7.5
CH-225 (added 4# Calcium Chloride)
TA-50 (added 23 oz. Baking Soda)
CYA-50 (added 2 small instant CYA powdered bags)
Salt-2500 (added 40# of salt)
Log today
FC-.5
CC-.5
PH-7.7
CH-350
TA-70
CYA-90
Salt-3500
Logs before additions, ~3 days ago
FC-2.5ppm (added 21 oz. 10.5% liquid chlorine)
CC-0
PH-7.5
CH-225 (added 4# Calcium Chloride)
TA-50 (added 23 oz. Baking Soda)
CYA-50 (added 2 small instant CYA powdered bags)
Salt-2500 (added 40# of salt)
Log today
FC-.5
CC-.5
PH-7.7
CH-350
TA-70
CYA-90
Salt-3500