Hello joined to see how much has changed in 20 years of aquariums. So far I would say a lot has changed. Kids found baby aquatic turtle so I set up a tank for them. After it cycled added some fish. Yes I know turtles eat fish however some of his tank mates grow to be 12-14 inches. So as the turtle grows him and a few fish will be moving into a larger tank. Our turtle lives with 5 Tetras (4 of them are Glofish) 2 Bala Sharks 2 Cory cats. I had fish and turtles 20 yrs ago and life just got in the way to keep fish anymore and devote the time and attention they needed. now that I'am back into it considering building a reef tank at least 120 to 200 gallons with sump and refuguirm. Just in planning stage on that on for time being. Researching tanks, protein skimmers, etc etc for that one.