Andrew Douglas, founder of Urban Farm, has transformed water cooler bottles in to potato planters which he uses to grow a large variety of heritage and heirloom potatoes. He has also created  AQUAlab, an aquaponic system for cultivating plants using fish and water. The system is hooked up to twitter and the fish and plants can somehow tweet when they need to be fed and watered!  Join Andrew to find out more about potato culture and these alternative urban gardening techniques.