I was leave the cracked egg. I have found many after candling with cracks in them and still have them hatch out. Some people put clear nail polish over the cracks, or candle wax. Seems to me the nail polish could kill them. I just leave mine alone and see what god has in mind for them and its worked out well for me.
I candled, got 31 out of 35 developing just fine.
I candled, got 31 out of 35 developing just fine.