You'll need to vent the closet either way; the size of the exhaust fan will increase as your wattage goes up.
If you are renting, it is easy to go to a discount building supply or architectural salvage store and buy a cheap replacement closet door, whcih you can hack up full of holes and then replace with the original door when you move out.
If you want to cover that large an area with a MH400, get the GOOD bulb- I've been covering the same size space with a Hortilux Daylight with excellent results.
Mmm what else. If you are running your veg room on 24/0 there's no need to even keep the door totally shut- you can leave it cracked and mount a good sized fan to move air. But be careful, because the far corners of a closet are hard to ventilate right, and I used to have problems with suffocation in my old veg closet. You'll want to place your smaller fans strategically to avoid that.
stinkyattic Reviewed by stinkyattic on . Keeping mothers and Lighting In the process of finishing up my grow room and having a problem choosing lighting for my mothers. I'm going to be keeping my vegging plants and mothers in a 6' by 3.5' closet. About four feet of that will be vegging plants, leaving a 2' by 3.5' area for keeping mothers(plan to have 3). I will only need 8-10ish clones from each mother every 1.5-2 months or so. Would a 2' four bulb T5 setup be enough lights for my mothers? Also the door on the closet is going to have to be shut for 12 Rating: 5