General Hydroponic's Complete WaterFarm is built with high-impact plastic to last a good long time. 

The unique square design of the Complete WaterFarm allows you to place several WaterFarm modules snugly together to create large, high-density gardens. As the plants gain size, these individual units can be spaced further apart to give growing room.

The Complete WaterFarm will support small, medium, and large plants. It has a large water capacity, but low water requirements so it's low maintenance. This Complete WaterFarm Module is an entire stand-alone hydroponics system. (If you need to add a bare-bones growing chamber to a controller, go here.)

It offers the features of larger top-feed drip hydroponic systems at an economical price, without sacrificing quality or performance.

Complete WaterFarm hydroponics system includes:

4-gallon reservoir
2-gallon growing chamber
Pumping column
Column support tube
Drip ring
1/2" grommet
Drain level tube
Elite® 800 air pump
9 liter Hydroton
3-part Flora Nutrient Kit

Dimensions: 1' x 1'

More info (PDF format)