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| | <Hydroponics> |
 | | And for the surface, I thought, why not cut out twelve inch by twelve inch pieces of half to one inch thick Styrofoam and cut holes at either the one, four, nine, or sixteen spacing, the standard spacing for Square Foot Gardening. |
 | | I planted each square foot with a different crop until the entire 4x4 was filled with a variety of lettuces, beets, Swiss chard, scallions, peppers, radishes, and spinach. |
 | | One idea I thought of was to leave one or two of the Styrofoam squares empty and to plant water lilies in that square. |
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