This is day 12 and I just candled. All of then except two seem to be dark with an air pocket, most seem to be filled more than half way. Two eggs are almost clear without the dark area and no air pocket. I am assuming that those two eggs are not good. when should I check them again? I have very bad vision so its almost impossible for me to see details in the eggs. I don't want bad eggs in the bator but don't want to throw out too soon. This is my first hatch. Also when can I put in the non slip pad on the floor of the bator. I can't have it in now because it will not allow the eggs to turn. Thanks.