GH WaterFarm ModuleIn Store Location: @J6 GH WaterFarm Module This extremely reliable system has proven itself over the last 25 years! Grow one large plant or up to five small ones. It increases oxygen to the roots for vigorous growth and healthier plants. The WaterFarm comes in two forms, complete and modular. The complete WaterFarm is designed to be a stand alone system and includes 4 gallon reservoir, 2 gallon growing chamber, pumping column, column support tube,