I do think super has a point! Since I have started to do 12 from seed my yields have been quite a bit less. I have to rearrange my shed to get a bigger flower area. Its 4x4 now and if I veg, the plants take over the whole room and get too tall (no room left to scrog). but it also seems to depend on the strain as well I think, I am growing out some White Russian again 12 from seed and its gonna be real close to the first grow I did that was vegged for I believe 21 days, just not as tall.