hey everybody, I'm new to this computer discussion thing., I believe you call it "old school". Started out scuba diving and keeping oddities in saltwater. My favorite was my giant mantis shrimp. I tried sharks, eels, even blue-ring octopus. Anyway, after many years away from the aquarium hobby, Iam fascinated by the thought of a tankful of super red-belly pirahnas. I've never kept them and I really want to do it right, any thoughts?