I have a Farm Innovators incubator with a circulating fan that I have used a bout 4 times with pretty good success (70-80% hatch rate). It has only 2 small viewing windows to observe the hatch and I am wondering about modifying it to have a window the size on the entire top. Has anyone done anything like that? I assume I would use Plexiglas, but don't know of it needs to be a certain thickness or any other info about materials to use. Any suggestions would be greatly appreciated!