So Im new to this hobby and this forum too. My fascination for Rbps grew very quickly over a few months time after seeing a tank of them at a party. So I have done all the reading and research on these creatures, bought all the books and now after throwing a lot of money around I finally have my tank set up. What I want to know is what do some of you Long time keepers of piranhas think of my set up? As in Is there anything that is way too over kill in the tank that I dont really need or am I missing something I really should have but not know of ? I have a 120 gallon tank housing 4, 1 inch Rbps. Its filtered by 2 Eheim 2028s. I have a Eheim aqua ball power head pushing the water over the surface for better circulation, 2 tetra 60 air pumps with 2 bubble bars along with two 200 watt heaters. A Pentair Digital Temp Alert and all the normal aquascape stuff with plenty of hiding spots and places to swim around and under. I also have tinted the glass under the lights so the light isnt too hard on the little guys.