Hello I seen on videos how people have cracked open the egg in order to watch the embryo grow. And we have an incubator and are at day 7 and was wondering how we can watch it grow. And how can we add air thru a tube for it to have air. Can someone give me step by step directions from start to bottom as far as how to Crack it open to put it in a cup or whatever we need to put it in and place it inside the incubator in order to watch it grow??? Also how we can make sure it has air if we watch one grow like that. And if it's to risky the. I would like to know the thoughts on that as well. This our first time hatching eggs. My sister has a daycare and it's something g neat for the kids to see.