I have tried to research how to candle eggs.. I found the technique, but no words on the incubator. Do we just open the incubator, pick one egg, close the incubator.. Candle the egg, put it back and do the same with the second egg? I was afraid that the multiple open-close of the incubator create temperature or humidity drops and affect the chicks. Maybe better to do a few eggs, wait a few hours, do some others? This way it maybe the temperature doesn't drop as much as candling 24 eggs one after the other?