I have been very busy the past four days. No time to work on the tanks. Today I was in the back yard all day working on the pool. So around 8 pm I come back into the house to find that the JBJ28 lights were out....temperature was over 85 degress. I have the ReefKeeper to cut the lights at 85. The 90 gallon was a little over 82 degrees. Wasn't expecting this high temperature this early. Running the AC right now to cool everything down. Check your tank temperature!