SO I am newer to all this. Right now I am just on my 3rd set of eggs in the incubator. The last 2 times all my eggs hatched on day 18. All the chicks were fine, but I was just wondering why I am hatching so early. Now the only thing I may have done wrong before was not take that red plug thingy outta the top of the incubator last time. So I did it for this hatch and we will see if I hatch on the right day.