TnxWith one 1000w I'd go with 16 but I'd also have a long look at Post #4. Pretty cool "MrEckted"!!!
Oh yeah, I forgot to say that there are 2 1000W HPS in that room.I do 8 in 26sq/ft and find it a bit crowded. You have more space than light. The plants on the end would get less light than down the sides. So 12 plants under the light say.
Oh yeah, I forgot to say that there are 2 1000W HPS in that room.
1K isn't enough light for that space. Our other room is 4 x 5 and it has 1 1000W.
Yeah, the idea is to establish some root mass and flip them at about 12"Fill that sucker up. Heck 2k in 32sq/ft, that will be great. You could do say 20 but don't let them get to big in veg. Got to remember flowering they could double in size easy. Read Kodiak's sticky at the top. Lot's of info.