I am a little confused about incubating in egg cartons. It seems like the way to go according to what I have been reading on here from some of the other posts, but I am confused about when to put the eggs in the cartons. Some of you put them in the cartons to start and some of you put them in the cartons on day 18. Is either fine to do? I have eggs to go in the bator tomorrow and am wondering what I should do. I know I want to put them in the cartons I just don't know when I should do it. Please help me!!