So I waited till day thirteen and candled 18 eggs and I hope I did it correctly , because I took out twelve eggs that looked clear with no developement ? There was a bit of a darker ring , but no veins to be seen ? The other six showed development ( dark )......two that I feel good about , but I couldn't tell if they were developing properly so it's up in the air .I have tried to keep the humidty up and the temp has stayed consistant so although these are shipped eggs I had hoped for a bit better results ? right now I think that I might get two out of eighteen eggs hatching ?.