I made a pouch to surround the cold air output with panda film and duct tape. I'm running the cold air from my window unit directly to my tent. Temps dropped from 90F to 79F in just 5 minutes and its still dropping. Since cold air falls I'm getting great flow. a fan at ground level in the tent is angled to push the air up. Any safety concerns? Will the cold air raise or lower the humidity?