Hey guys, I'm really new to this site so please excuse me if I posted to the wrong thread or did something wrong. I have this 75 gallon setup that I'm pretty proud of and wanted to get your feedback on it. I'm going to be keep Red Belly Piranha in there, I already have 3 but want 5. Is this tank big enough for 5 or should I stick with the 3? And also, I have a bare bottom tank with minimal decor, has anyone had good success with a setup like this? Thanks guys!