I am new to incubating chicken eggs, and I thought I would do really well, until none of my eggs seemed to want to hatch. I have them in a homemade incubator where the temp stays between 99 and 102 (no fan). I flip them once or twice a day up until day 18, and i candle them on day 18 where they are still alive, yet they do not hatch around the 21st day. there is one in right now that is on day 25 with no movement or pips or anything, and it was alive on day 18, but now i cannot tell. sometimes during the night the temp dips down to 97, but i did not think it would affect them that much. The humidity stays between 55% to 65% through out the 3 weeks. Is there anything I am missing? any advice would be greatly appreciated!