I am using a King Suro 20 incubator. Testy little thing! All through incubation I've been tapping the temp up or down a wee little. I have TWO digital thermometers inside with the one probe on top of the egg on one side, and down between two eggs on the other side. And both read differently. Though by about a degree difference. Through incubation I let the one read 99.4, and the other always read 101.2 to 101.7. So I'm pretty spot on. But now today I took the incubator out of it's cradle and upped the humidity to 67%. And now both thermometers are reading about the same but at the high end. 101.8! So now I'm trying to get the temp to back down so they are both reading closer to 99.9. Am I assuming correctly that it's due to the higher humidity plus the heat the chicks are now producing themselves? Or, I hope not, the eggs that weren't fertile are beginning to rot a little more warmly? It's going to be pretty sad if nothing hatches! I also opened up the air vent to half way open from the quarter open that it had been all incubation. Not sure if that also affects things.