The Hydrofarm Megagarden System is a 4-square foot garden space that can produce 5 times as much yield as a garden of the same size. The garden thrives indoors or even outside in a hobby greenhouse. The Megagarden System uses the ebb and flow (flood and drain) system to irrigate your plants for optimal healthy roots. The pump nutrient solution from a reservoir to a controlled water level tray. The plants all get watered evenly on a timed cycle.The removable grow tray can hold 15 5-inch square planters. The kit also comes with a reservoir, pump, timer, and more, so you'll have everything you need to care for your seeds and buds. Grow bright gorgeous plants or yummy vegetables with the Hydrofarm Megagarden System.