Two nights ago, we did an OCULT and passed. Whew! I thought we had turned around. Last night we did a re-trial just to make sure. Nope. We lost 1.2ppm FC and CC is at 1. Is this normal?
I did a re-trial because I wanted to make sure we were in the clear before putting the solar cover back on at night time. I need to rule out that there isn't something on the cover causing us to lose significant amounts of chlorine over night.