Here in PA, we had a "Heat wave" of 90+ days for 3-4 straight.
My nomal FC usage until then was 1.6-2.0ppm...
During the heatwave, it jumped to 3-4ppm...3.8ppm the one day. I'd add to get it up to 8.8 or so...and by next day, sun down I'd be at 5 again.
Pool temp was 84, bright sun...no bathers except me and the wife for an hour or two.
My water is clear...I have passed the OCLT...0.4ppm per night.
My CYA a is 60-70ppm so I am maintaining with CL at 5-10ppm with liquid chlorine (12.5%). I am converting to liquidator soon...right now it is manual adds every night.
TA is 100, CH 200, Ph 7.6, CSI -0.03
Sound normal? I thought it was a tad high for a 17k pool....