I'm a stay at home Momma so I'm here all day with the incubator and drive myself nuts wondering whats going on in those eggs! I start candling at day two. I am always able to see the germinal disc in the fertile eggs and I check for those. Then I check the progress every day usually when I get up in the morning then before I go to bed. How often do you check? Is there anything wrong with doing as often as I do?