I assemled my own incubator from a 70 quart cooler, and 2 60 watt bulbs. I think the 2 bulbs might over power the incubator after the lid is closed. That's after turning eggs. But it then stabilizes and keeps around a constant temp. However, my dad bought a HovaBator, because he was afraid mine would catch fire. I think I've noticed that compared to my Home Brewed incubator, the HovaBator seems a tad bit under powered on the heating element. Especially during winter as it is now. I dont know what it is, but that pilot light has been on all night. I've been using both mine and the HovaBator. Mine for my chicken eggs, and the other for quail eggs. So far I've notice that almost all of my quail eggs haven't grown. Am I just an amateur, or does anyone agree that the Hovebator's heat element needs a little more help?