I've hatched plenty of eggs in my still air Hovabator in previous years with no problems. The temp was holding steady at 99.5 and everything looked good, I could see movement in the eggs. At about 12 days, the developing eggs started to get blood rings, and by 15 days, they were all dead. What could have happened? These were shipped eggs, from someone with excellent feedback. Could it have been a bacterial infection in my incubator? Irradiated eggs? Should my temp be a little higher? I'm always afraid of getting it too hot. I want to try again, but I don't want to kill more eggs. I had a damp sponge for humidity instead of filling the channels. I'd like to try dry incubation this time. Any tips? Thanks for any help.