I've been testing my water nightly ever since switching to bleach. I've noticed that it seems to me that I'm losing chlorine quickly. Maybe it's normal but I wanted to run this past the experts!

Last night @ 9:40pm
FC - 14

Tonight @ 7:50pm
FC 9.5

I'm in AZ where it's consistently been over 110 degrees lately. My CYA (last time I tested) was at 117. The pool is crystal clear, but should I be losing that much CL in 1 day?