A couple weeks ago (mid-May, 2007), a couple of friends of mine gave me six "platinum tilapia," and loaned me a 100 gallon stock tank. This past weekend I ordered 100 pieces of hollow tile, and will hopefully have my "pond" finished next weekend.
The goal is to build an aquaponics system. An aquaponics system attempts to combine aquaculture, the raising or farming of fish, and hydroponics, the growing of plants in a liquid based nutrient solution, the nutrient solution being "fish water," water chock full of nutrients from the fish.