The General Hydroponics GH6700 RainForest 318 complete system is perfect for propagating cuttings, quick-starting seeds, or transplants. The Vortex spinner included in this set oxygenated nutrient solution than gently distributes over cutting base or root system, giving you the most oxygen possible in the root zone. The RainForest system is ideal for starting plants or even for growing plants to maturity and harvest. System includes: 17-gallon reservoir with lid, (18) 3-inch plant sites, (18) 3-inch lid inserts, vortex sprayer, (18) 3-inch grow cups, CocoTek liners and caps, and 3-part Flora series kit. This RainForest system is perfect for small and medium plants.