I am in the middle of building an outdoor greenhouse with an aquaponics system. I am planning on using tilapia and a variety of veggies and will farm duckweed, red worms and guppies to feed the fish. I would love to see your system and hear about anything you thought worked really well or didn't work at all. What are you feeding your fish? What medium are your plants? I will post some pictures as everything comes together.