Quote Originally Posted by crisstyle21
The way I see it it doesnt really matter what heat source you use. As long as the bulb isnt a spot light and doesnt directly heat and shine to the eggs youll be fine.
I disagree completely. A hot light bulb is a very bad idea. Along with needing a rock steady 89 degree temp you also need near 100% humidity. High humidity can cause the bulbs to blow out faster if the contacts in the mount start to rust or get too much moisture on them...if the bulb goes then the temps will plummet.

I recommend you get some 11" Flexwatt and wire it to a Helix or Herpstat Thermostat. This is going to house your eggs so don't go cheap. You can also put full water bottles in the bottom of the frig to take up space and act as a buffer for the temps.