MegaGarden System (No Media)Get the convenience of an flood & drain (ebb & flow) system in a 22" x 22" x 10" size garden. Flood & drain systems work by pumping nutrient solution up from a reservoir to a controlled water level tray. All plants are watered uniformly on a timed cycle. Please note: There is no growing media included with this system. Features 7. 5 gallon reservoir Insert grow tray Submersible pump + timer Seed starter cubes Water level indicator 15 5. 5" square