The EcoGrower GH4920 complete hydroponic system from General Hydroponics brings convenience to any indoor gardening system. It uses a revolutionary 17-gallon hexagonal reservoir, making it easy to place multiple systems closely together to utilize less space, and includes six (6) 6-inch removable lid inserts. The EcoGrower also incorporates an air driven "spider" drip system, allowing hydration to reach each individual pot evenly. This system includes everything you need: 17-gallon reservoir, Spider pumping column, insert lid, six (6) 6-inch lid inserts, six (6) 6-inch net cups, CocoTek liners and caps, single outlet air pump, clay pebbles, and 3-part Flora kit. For easy, fun indoor growing, choose the General Hydroponics GH4920 EcoGrower Max hydroponic drip system today!