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 cuttings' 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.