I just candled the eggs, it's only day 5, but the one brown egg that I had that was very porous has what I believe is an air sac twice as big as the others. This is only my second time hatching, so I'm still not 100% sure of what I am looking at. But this one that is more porous than the others seems to have a very thick (like 1/2 inch) dark ring in the middle of the egg, whereas the others have a small dark area at the tops of the eggs. Any idea if this egg is OK? I know the porous shells need more humidity, but will that have any negative effect on the other eggs in the incubator? Also, the incubator is a still air type, so not sure how to increase the humidity since all I do is keep a well at the bottom full of water. Thanks!