Plant of the Month: May 2014 - Member of the Month: July 2014
That could be from many reasons. The main two reason would be its genetics, each seed and clone will always be a little different. Second reason would be some kind of deficiencies or root damage stump some growth.
Hydro shop, amazon, one of our lovely sponsors, and some of the big box stores. Nutes have 3 numbers on them like 10-20-20 (N-P-K) on the label, you're going to want one where the first number is 0 and the second two are high.