In relation to this wonderful Sticky here:
http://ball-pythons.net/forums/showt...oler-incubator

Okay Stupid question from the newbie...please don't hurt me...

First off the set up is awesome, love it! Now explain the process of how it works to me. I understand incubators need certain levels of heat and humidity but how does the heat tape and capped water bottles play into this?- wouldn't this allow for no humidity possible since its capped tight? or is misting required to build up/maintain the humidity ever so often? Is the LED light solely for viewing or used also for temp/humidity? Are there issues with overheating the water bottles and releasing BPAs and causing issues with eggs? (more curious on that question than serious.)

I understand the fridge set up model with the fans and the heat tape but on this I'm just missing something very very obvious here *facepalm*. Again forgive the stupidness!