hi tony
i too grow in a closset, it is vwery importent to remember things can get very hot and stale in there, especialy whilst the doors are closed, as you can see in the pics i have posted i have instaled a simple fan in the bottom left of one of the doors, this draws fresh air in when the doors are shut, also instaled is a ousalating fan on the left hand wall of my closset, this circulates the fresh in coming air, to the right of my closset ( not shown ) i have knocked a hole in my chimney stack, i have shielded the light from going straight up the chimney by stagering some plywood infront of it, venterlation is totaly importent when growing in a closset, i hope this helps happy growing