I put 6 of my chicken eggs in my "new" used incubator 19 days ago and by candling found out only 2 were fertile. Then like an idiot who didn't know what she was doing I bought some eggs and put them in there 8 days ago. Well I have been trying to make a hatcher because yesterday was day 18. I started the hatcher last Monday and had to fiddle with the temp for four days and humidity for three days. I was so frustrated and then yesterday I put the two eggs in there and the temp was still varying by four degrees, down to 99 and up to 103. This is a still air hatcher. I stayed up last night and every 45 minutes checked the temp and fiddled with it. Around 3 this afternoon, the temp and humidity stablized and everything looks good. I am just so scared I killed these babies in the process of trying to figure it all out. Please cross your fingers for me! My dd is so excited and I know all things don't work like we want them too, but I am hopefully.