So, I got a new incubator for Christmas of this year, it's the largest I've ever had as I once put 40 chicken eggs in it [could technically take more, but I only have one shelf, and besides the eggs all turned out to be too old anyway], and it's originally for reptile eggs. After the initial experiment with the 40 eggs that I'd been hoarding in the basement for two months, I got a batch of fresh chicken eggs and put them in. It was perfectly fine, and besides a few deaths and the complicated birth of a chick called "Sponge" I ended up with about a dozen healthy chicks.. So the incubator was used as a nursery for Sponge for a bit, and then a hospital when I put her outside and she managed to escape the brooder and nearly freeze herself to death, and then cleaned in preparation for my newest project; Emu eggs. I turned it back on just before they arrived, and everything seemed fine. According to the readout on the front of the incubator, the temperatures were fine and stable. The eggs were placed inside, along with a new thermometer I got to check the humidity. Much to my surprise, this new thermometer reported temperatures that varied wildly. 90 F one day, 100 the next with no describable reason. Thinking it was faulty, I got a second thermometer, only to find that its readings were similar, and have now been further confirmed with a infrared temperature gauge. I've seen temperatures in there go up to 104, even when it's set at only 96! Luckily the eggs themselves, on the surface at least, generally remain between 92-98 or 99. Hopefully they haven't been killed. What could be wrong? And why didn't this cook my chickens? Also, in the general experience, how do eggs do with hours-long power outages? The emu incubator was unplugged accidentally for about 6 hours, and of course there's no real way to tell with them how they're doing in there. What is the lowest temperature anyone has seen eggs survive, for how long and on what day? -I assume earlier is worse, and my emus were only on day 10, which as far as my research has told me is the emu equivalent to a chicken's day 4 or 5. Chickens of mine were fine with a similar period of cooling on day 10, but I'd like to hear the experiences of others, especially with younger eggs.