Quote Originally Posted by samtex View Post
My CL seems to be stable overnight but during the day I will loose about 2ppm.
Losing 2ppm during the day is not unreasonable. With a CYA of under 30, I'm actually surprised it is not a lot more than this. Even with a CYA of 50 (which is about what we suggest for most pools), you are not going to go through the day without losing chlorine. That just doesn't happen.