Just starting out again after a 9 year hiatus from fish keeping. I had to sell all my tanks when I moved. I had a 150 gallon tank that was pretty big. Me and my wife sat inside it at the same time when we were setting things up. I had 10 tanks of various sizes. I used to keep Koi, goldfish and Bettas.
My current housing situation limits what I can keep. One day I hope to have a fish room again and an indoor pond. lol