I've set eggs three times, a full incubator (41 eggs) each time and of those times I've only successfully hatched 2 chicks. The first time I had wide temperature and humidity fluctiations so no surprises. I don't think any survived the first week. The second time I think I had the wrong temp (a little too high) or the wrong set date marked on the calendar. I went to remove the turner and increase the humidity but they were already pipping. That run I got the two but I think the rest got stuck in their shells. This last time I had my toddler cause a 115 degree spike for several hours. I'm hoping they might have made it otherwise as I found a beautiful chick with its egg sac upon egg-topsy. Is it really that hard to hatch chicks in an incubator? I have one with a fan. It is hard to get the temp right as I only have to bump the nob by a hairs breadth to change the temp from 98.8 to 102.1. Should I aim for the higher or lower temp? And what humidity is best? Was aiming for 55% for most of it and 65% for the last three days.