Not realy a growing room, more like a growing,, closet? It's small space (2 1/2 across & 2 3/4 horizontal). I covered the walls and back of the door with some cheap aluminum foil that is supposed to be "Platnum Quality" =/. Yea well i did that, then, i hooked up the 33 watt flourosent horizontaly on the right wall of the closet. The closet looks pretty hooked up and it does get alittle bright on there. Well, i got the pot in the middle of it all and it's giving off light right now. I hope i could get some good results if this kinda helped it. If i made a mistake on somethin or i need somethin more please let in on da' 4-11. =D Peace 'n' Bud.