Hydroponic production equipment, namely, greenhouse hydroponic systems, consisting of vertical growing towers, tower support racks, and plumbing systems, hydroponic towers, stands, displays, and receptacles for holding a plant or growing medium, plant supports, and gutters; plumbing systems consisting of tanks, pumps, piping, filtration, and valves for both irrigation and drainage, and control systems that automate all irrigation activities; and seedling starting equipment, namely, germinatio...