The Rainforest 66 is a favorite among users who wish to grow medium to large size plants. Vortex? Sprayer lifts and oxygenates the nutrient solution and then gently distributes it over cutting's bases or root systems. This system includes: 17-Gallon reservoir with lid, six - 6 in lid inserts, Vortex? Sprayer, 6 in plastic cups and 3-Part Flora Kit.