Im buying everything I need for the 180 im getting in about a week... I am putting 20 baby 1 inch reds in there to start it off. I've allready bought 3 AC 500 Power filters for the filtration. My question is should I buy two power heads and stick one on each side or are the fish to small at that size to have power heads?? What size should I get also?? I was thinking about doing one of those long bubble wands across the back and when they get bigger get the powerheads... or should I just get both rightaway? Thanks! Jake