I treat chickens like I do my peas. My concern is with hatching expensive birds so if I can get the best results for them I am not really concerned about a cheap chicken. We just ran a load of BCM and EE in the Brinsea set on 99.6* and 55% then hatched at 75% and whatever it spiked to during hatch. I can tell you that my wife freaked when she saw the temp in the hatcher was over 103*, we left the door open the rest of the night... Anyway, out of 198 eggs set we candled out 14 and had six or eight either drown in the shell, got stuck, or trampled.