I have 4 dozen eggs in my incubator....I'm not sure how long but they weren't turning. I'm not a pro at this and we're very busy people so i really didn't notice they werent turning. It was probably a week at least. Anyone know what will happen to the babies? It's a large forced air type incubator. Everyone that i've talked to isnt' sure what will happen. They are due to hatch Thursday.