The hexagonal PowerGrower Eco? features a great design. It is 15 in across the top, 15 in tall, and consists of a single growing chamber at the top with integrated reservoir below. Complete system includes: 5.7 gallon reservoir, 3 gallon growing chamber, pumping column and support tube, drip ring, 1/2 in grommet, drain level tube, Elite? 800 air pump, 9L clay pebbles and 3-part Flora Kit. PowerGrower Module comes with reservoir, growing chamber, pumping column, drip ring, grommet and drain level tube.