Hello. I'm trying something a bit unusual, it's not for growing cannabis but I figured I would have the best chance asking here. What I'm trying to do is get the temperature in a 4'x4' grow tent down to 42-50F (6-10C) in the winter over the nights. During the nights in the winter, the outside temp will be between 32-26F (0 - -3C), and the room that the tent is in between 60-66F (16-19C). The plan is to run an intake fan hooked up to a vent tube that takes air from the outside. Do you guys think this will be doable? Any recommendation on the strength of the fan? Other tips or input?