The legendary Big Buddha grow roomoutgrows any other hydroponic system by 2.5X guaranteed. The Big Buddha turns four grow rooms into one by using the shelf system. With the shelf system your plants will grow behind the top shelves, and so they can grow to about 6 feet tall. This is important because the top shelves WILL NOT hinder growth. Instead your plants will be free to grow and as they do, they will shift behind any shelves above them. Also, it is important to note that you can literally walk into this grow room. That is what the open space is for!