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The original hydroponic system built by Gericke in 1929. A roll of bituminous roofing paper (36 ft × 3 ft) was folded up on every edge 6 inches to form a trough (A). On top of the trough a layer of wire netting was attached (B), and a layer of burlap (C) was added on top of the wire. A one-inch layer of sand (D) was added on top as a substrate for the plants to grow in. The trough was filled with nutrient solution (E), and a variety of crops were planted in the system.
