Yet another first timer, I was able to wait until day seven to take a look. Maybe I should have checked earlier. I have a Little Giant incubator. There is a small fan in the top. The humidity has been at 32-36 since everything settled in. The temp has been between 100-101. I set 100 eggs after letting them sit for 12 hours after receiving the from ups. Candeled them on the way in and drew a circle around what I saw to be the air sack. Two had bubbles and one was on the small end, mmmmmm. Now on day 7, I no longer see the air sack, they are darker on the top and appear to be clear at the bottom. I am able to see vien development in the upper portions. Is this correct, or have I led them to the compost tent.