turned the eggs last night like normal and added water. Temp was 100. It usually stays 100 but sometimes on cold mornings it is 99. It was 102 this morning. I turned it down and watched it cycle a few time to make sure it was steady. The one thing I did last night was I turned the lid one turn so it would be safe so no one pulls the plug. I also moved the thermometer to where the window was. it is a hova-bator turbo fan. I turn eggs manually. I can not see how turning the lid could affect it since it's forced air so...??? Could it be because their growing making heat? They will be in there a week at 5:00. I really hope that the spike didn't hurt them. I wentnto bed around 12:30-1:00 and got up 8:30 so they werentnin temps to long, depending when it spiked. These will be my first hatch! ( it's just so amazing that you can look at these eggs and see something growing!!