I candled today to show my great-nephews (7 & 5) what the developing embryos looked like. I pulled the 4 questionable eggs. 2 of them looked like they were not fertile, and two of them looked like maybe they quit on day 2 or 3... Then I had to pull one more that looked like it had a blood ring. It was doing very well at day 10. Trying to compare it to he pics hat are posted about the development, I'd say it quit about 2 days ago... Then my incubator temp spiked to 102.4!!! I only pulled 5 eggs, and it had been holding really nice and steady for days... Frustrating... I turned it down, but now I'm gonna have to stay up law to make sure it is holding without dropping too low... I have 31 of my 45 that are still going strong, so I'd sure hate to lose them to a bad temp fluctuation.