Root vegetables cannot be grown. You can figure ways to support vegetables that have weight like tomatoes, cabbages, etc. using mesh bags, wire, whatever. Depending on how big a system you create, you may eventually want to spawn your own fish. There are aquaponics list-serves on the net where people will be happy to discuss in detail further questions. It is used commercially throughout the world.
China does it the most.
I have probably left off something you would like to know, please feel free to ask me whatever you like. I am sorry there are no pictures at this time. That would make it alot easier, I'm sure. In the future there will be pictures. I set the timer to go about 30 seconds every 40 minutes.