My four Big Bomb are 18 days into flower, the problem is one of them seems to be developing a lot slower in terms of bud growth, it has stretched a bit but another plant roughly the same size has a much bigger cola developing, do you think this could be because of the stretch? Its the first picture (it is also in the left hand corner of the grow tent). Cheers
if they are clones no clue, my clones grow at about the same rate if all the conditions are the same (soil, water, light) but if they are from seed it simply could be different phenotypes shining through. I have planted many a seeds of the same strain and they grow differently. Most recent was a cheese strain where one grew very tall and had bud development similar to the first pic you posted, while the second was much shorter with longer more compact colas.
what I have been doing to keep things uniformed. I plant a couple seeds and when they are ready clone them. grow out the three mothers or clones keeping a set of small mothers for future cloning. When I find the traits I am looking for in the plant I trash the other mothers and clone the shit out of the one I liked, this way the next time around all the plants have a uniformed look about them.