I cant be the first to ask this so I am sorry for posting this question from my start. I have searched this site and just googled but I can't seem to find a straight forward tutorial. Any link would be great. I have 21 chickens and one proud rooster. 1 incubator that handles 9-12 eggs. Its the JU12 off amazon. Not the best I know. My question.. How do you sort out how to "candle" the eggs to find the best ones for the incubator. I understand the shell quality, but I cant find much of anything to explain selecting the best eggs for incubation, or how long they can sit from butt to incubation. There is much info and pics regrading 72 hours.. But I want the best batch of course. My rooster is very active and everyone is from a batch of 30 16 months ago. Thanks for your help and direction! (ps. I will fill out my profile in a few, just trying to this question out to make sure I am doing it right.