Is there any way you can put an actual heating element in instead of a light bulb ?
I think a heating element would be more dependable, and more economical to run,,
if and when you load a lot of eggs at one time,, your heat recovery will be very slow with just a light bulb..
I have a few sportsmans and the recovery time can take up to a day to stabilize..
It is not so bad when I add only a few dozen at a time,,
I do rotation hatching for about 4 to 5 months each year..
I can do about 500 eggs in each of two of my sportsmans..
If it were not for auto turn, by choice, I would not hatch any eggs..
I have a way to make auto humidity pans w/5 gallon reservoirs for under $10.oo ..
don't be afraid to put a strong fan in there to circulate the air,, you want something more than just moving the air,, you want to push the air into every corner.. result will be more even heat distribution.. less chance of cold spots..
//////jiminwisc///////