Wow. What a difference 8 hours of 70 degree sunlight makes!

PH: 7.5
ALK: 100PPM Total Alk as CC
Free Chlorine : 0
Total Chlorine: 0
Calcium Hardness: 150PPM Calcium Hardness as CC
CYA: 0

Did the sun really burn all my Chlorine up in 8 hours?

Thanks,

Joe