I was candling for lockdown tonight and thought one egg wasn't right. The air sack was weird and there was a lot more space than all the others showing in the bottom of the egg. It was different from the others. I was told a bad egg in the bator can cause a the ones around it to died due to bacteria and I've been doing this and been spot on, every egg I destroyed was bad, each time I was so relieved. This time there was a baby chick in the egg at day 17, the poor thing was alive. I feel so awful. My heart just feels awful. I don't ever want to make that mistake again.