Hello. Would you mind posting pictures of how you're ventilating? In the past, I used CFLs so never had an issue with ventilation, but I plan on purchasing a 400watt HPS and will need to. I am growing in a closet as well, so don't want to mess with ducting, etc... I just want to either vent into the attic or the sides of my closet which just leads into the walls of the house as one side of my closet is the edge of my house, and the other is the hallway, so it would be moving air into in between the walls I assume. I plan on getting a inline duct fan. Would that work?

Peace.