I seem to have the temperature difference sorted. I left the incubator warming up slowly with just one 60watt bulb and the temp was with in 0.2 degrees top to bottom.
I noticed that the hotter the heater (more bulbs) the bigger the difference which makes sense as the air has less time to blend. I plan to program the bulbs so they start switching off as the temp gets closer to the set point as each bulb will be controlled by its own relay. It was surprising that a single 60watt bulb could heat the incubator since I still haven't installed the insulation over the back door of the chamber so im going to reduce the wattage of all the bulbs.
Next step is to build the control panel
So far I have installed 2 fans that will help divert the air in the control panel. I have also installed a 4 digit display (temp) and a 3 digit display (humidity).
still to install list for the control panel:
install 4 push buttons (lights, edit, plus, minus)
install arduino mega controller
install 4 green leds to show how many bulbs are on
install 4 red leds to show a bulb has failed
install 1 amber led to show the incubator is doing a self test
install 1 temp and humidity sensor
install 1 additional temp sensor as a duct over temp sensor
install 4 neon blue leds for lighting the incubator
install 1 mosfet to control the lights
install 1 7912 to control the digit displays
in the space under the incubator I still have to install
1 breaker 120v
4 ssr relays 120v (one for each light)
1 CT to measure amps which will be used to test if a bulb fails
1 computer power supply
1 standard relay to act as a safety
other parts that are planned but may be changed
up to 6 additional led lights for lighting between the draws
some type of power to the turners (not sure on details until I get the turners as I may change them to 12v). I would like to install wire chain (that's a plastic chain the wire goes in). That way the wire will be protected when the draw is opened but its expensive so I may have to find a different way.