I am curious about candling eggs during incubation. How do you candle the eggs without allowing them to cool too much? Is it harmful to them to be picked out of the bator and candled and then air hole marked before replacing in the incubator? Does this temp fluctuation affect them? and also how often is it recommended that they be candled? I have been told to place eggs in the bator and don't touch until lock down, at this time remove from the turner, candle and lie flat in the bator, lockdown and don't open again until hatching is done. others have said to monitor and candle once per week, but I'm thinking this might affect the temp too much and cause stress on the eggs? Interested in hearing the opinions of others.