Hydroponic Aerotower-32 is useful for kitchen gardens or rooftop gardens. Users can grow 32 plants in this tower. This aerotowing-32 includes 100percent water nutrient recycling, a 70-liter nutrient tank, 70percent to 90percent less space, and the space requirement is 2.5 feet x 2.5 feet. Try not to select too many large or vine plants and no more than 4 large and/or vine plants per Tower Garden.