Great information. I'm having a 48x18x18 built and I am looking for 6 mos+ because I am a beginner. Do I need to put a divider in the tank ? also Is there any reason I can't pick up river rock or sand stone at a nursery for the tank if I clean it and boil it first. Also is it safe to use some live aloe plants for decor. Also what are your thoughts on feeding pellets?