My 400W MH was waayyy too hot for my closet.... Trying CFLs now, but.... Anyone have any experience with grow tents like these HTGSupply tents? Smaller tent Bigger tent I was thinking I could actually use my HID lights (have a 400W HPS too) in this grow tent, but I don't want to buy if the ventilation/heat issues really won't work out. I could duct the heat from the top of the tent to the window or into the room with some inline fans.... This is the reflector I have. I have a 400W Growbright MH conversion bulb and a 400W HTGSupply.com HPS light, for use on the S51 ballast I have from HTGSupply. I rent so I can't put ventilation in the closet; was thinking maybe I could use closet for cloning/mother if this tent would work. Any advice welcome - losing hope on my grow situation!!