hey Crispy...since you just started it looks like, I suggest that you wait until your plants are 5 nodes tall before you begin with a nute regime...also, to keep them short and bushy, you need to employ topping, lst, and supercropping methods...any combination of these techniques will result in very nice results...you still have about 3-4 more weeks until you need to worry about this...but keep on growin'!