a standard coil heat element with a couple computer case fans. The heating element heats up and cools down very quickly so it is easy to keep consistent temps. You are heating from the bottom so the heat has to radiate through your incubating medium which seems to help with humidity. Also heating from the bottom you are not directing all that energy on the exposed portion of your eggs. The last one a built I started my testing inside of my garage which was around 45-50 degrees at the time, and the incubator temp only fluctuated .5 degrees. Once I brought it inside the temp only fluctuated .1 degree.



I have also seen people use heat tape with good success however I don't think it heats up fast enough. If you are going to go with heat tape though I would suggest using 3" instead of 11" and just loop it back and forth a few times to increase surface area. I have seen people put a dowel rod at each end of the incubator then wrap back and forth between the two. The 3" also heats up quicker than the 11" so you have better control.



Those are just my opinions...



George Knaack

GLK HERP

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