Thanks Dt, I appreciate the sentiments but I am using the ZooMed reptibator as the incubator and this machine has a built in proportional thermostat. All my racks and quarantine tubs are on herpstats. I have 5 of them. The reptibator has a alarm setting but it wouldn't have triggered because the problem was in the tub that housed 6 eggs and wasn't the incubator malfunctioning as far as I can tell. The tub that was adjacent to the problem tub was sitting at 87.6f in the incubator. The way I found out about the high temp was when I looked at the thermometer. I had positioned the thermometer probe in between the space at the base of the clutch.