I recently purchased a 32" x 32" x 64" tent and wanted to put a 400 watt Vivosun hps with air cooled reflector in there. My problem is the hood is 20" long, 16" wide, and 7" high, and I'm worried it won't fit when the ducting and fan is accounted for. Does anyone have any suggestions? I really don't want to go under a 400 watt.