It is day 20. The students are getting excited, but I am worried that nothing will hatch. I am pretty sure one won't. When I candled them on Friday, one looked like it had stopped developing. I have all dark shells so it has been hard to see. Most of the others looked full, I could clearly see air cell, and one I thought I saw movement, but not 100%. I am hoping I will be seeign pips and hearing peeps tomorrow!!