The Volksgarden is a rotary hydroponics system in which plants are installed in a circular unit, growing toward a light source at the center. It has approximately 20 square feet of growing area, and holds up to 80 plants. Its most successful crops include
you could add some fish to your water reclamation tank for a small aquaponics system. Grow a few plants to feed the fish and this forms a closed system. There is no need to fertilize, the fish do it for you! Permaculture at its finest!