I'm going to candle for the first time in this setting at 10 days because the eggs are dark and I have an untrained eye. This probably sounds dumb, but do you take them all out at one time or candle each one and quickly put it back in the bator and get out the next one? I am concerned about getting 42 eggs out at one time to candle and taking too much time to do it because I might linger too long on each one trying to fugure out what I am looking at!