Quote Originally Posted by SmokeMyPiece
Which bulb you gonna use?
-the 400w is good for a 10sqft box
-the 600w is good for a 18sqft box
I have a 400 w right now. Anyways I was planning on doing one 10 sq feet or so. I have big flowering space that I built, but since I only have 1 light for now, it doesn't heat the space up.