Cool. I have a small Shelfponics setup that is loosely based off of Gardenpool.com 's design but it's not running because I found it isn't much good for anything but starting seeds since the beds are so shallow. I've got bluegill in it. I plan on doing ibc's in a greenhouse later, building one at a time. That's why I was interested.It is a new area for me too. I have seen some elaborate systems. But, I am not a complicated person. I am thinking four IBC's running independent of each other. Crappie ought to do well in there. I would like to do some white bass, but I don't see them thriving. I don't eat catfish, otherwise that would be the ideal fish for the system.