Fan in Incubator...really necessary?

[PythonWallace]

So, can you use an old cell phone charger to run the cpu fan? And just run the cord through a hole in the back?

If you want to use a lower voltage adapter you can order a matching fan from the links I pm'ed to you last week. I have 2 5v fans running off a 4 volt phone charger for one of my frog hoods.

What do I need to know about milliamps? what if the fan doesn't say anything about amps? is knowing the voltage enough or is amperage really an important part of all this?

All of the 12v computer fans I've looked at use brushless motors rated at 12v @ 1500-1700 mA. If it doesnt say I would go by that and get an adapter that's between 800-1600 mA. For smaller incubators I like to go lower so there's less vibration and "wind" when it's not needed. Even for my bigger incubator I added more fans instead of running a single fan at max power so there's less noise and vibration.