I got a new incubator for Christmas this year, A little giant still air incubator. Of course I cranked it up and set some eggs(23). I did everything by the book. I let it sit for a couple days to stabilize before setting the eggs. Everything was going smoothly the temp was holding steady at 99.8 and the eggs were doing good so far. On day 2 of incubation the temp spiked to 137 F for over an hour. When I caught it I immediately cooled the bator and reset the temp. There have been no incubator issues since then. The temp is holding steady at 100.0 F. The eggs should now be on day 7. I candled for the first time this evening. (I was afraid all the eggs had died and wanted to give them a couple extra days.) Several of the eggs had no development while others showed some development but I couldn't see any blood vessels. A couple of the eggs are dark shelled and difficult to candle as well. At what temp do eggs die? And, should I scrap this hatch and start over?