I got an incubator (Genesis 1588) for Christmas and promptly put 24 eggs in it. What do I look for now in keeping an eye on everything? Do I need to candle? How often do you have to refill the water in the bottom? I worry a bit about opening it because when I was getting the temperature up to 99, I opened the top to add the eggs and the temperature dropped all the way to 87 before slowly moving back up. Is it ok to have drops like that? It's kinda like when the hen gets up to eat, drink and poop, right?