Karma, sorry if it seemed like I was making fun of you. I was not. Just trying to prove a point. As far as your grow space I remember it on your other post. Given the vertical restrictions you have and since you are using CFL's I would flower at about 6 inches. You should be seeing at least 1 or 2 alternating nodes by that height anyways. You should end up with about 1ft to 1.5ft tall plants by the end of flowering which would be the max for your grow space. As far as horizontal space allow at least 4 inches on either side of the plants as well. Its better to have extra space than not enough.