I think for about 15 plants man you're going to need a bigger space, yet 3/4 of them could turn out male or female.

You also need a correct ballast for the full spectrum lights ( HPS / MH )

If you're going to actually do about 15 plants, I would say you're going to need some where around 600-700w.
Joel Reviewed by Joel on . Noob needing all sorts of help Hey, I was thinking about starting a closet grow and I was reading up on bulbs when I read something about Full Spectrum lamps. I heard they were ideal because you could use the same type of lamp through-out the whole process, which for me is ideal. I tried looking around the forums for info on them but I have not seen ANYONE mention them. Are they bogus? Also, how many plants do you think I could grow and how many watts would I need for an 82" x 36" x 72" (height x base length x base Rating: 5