Grow your own food at home with these kitchen gardens. Square white PVC columns, custom designed, can grow 20 plants (lettuce, basil, kale, arugula, tomatoes, radishes, and any other small plant. Systems are self contained. The columns are filled with water (8L tap water) and some plant nutrients (included), a timer turns the submersible pump on and off (15 min intervals) and circulates nutrient rich water to the roots of the plants. This is called controlled environment agriculture (CEA) Just plant the seed in a cube of rock wool. place in one of the ports on the side of the tower and watch God do the rest. The roots grow inside the column and the plants grow outside of the column. Can you sunlight or artificial light (LED bars) to grow outside or inside. Can grow food in 30-40 days depending on the maturity of the plant. Harvest and replant. Can plant several different crops at the same time. Avoid all pesticide contamination and insects (if indoors). Will include a book of Aeroponics : Growing vertical using no soil. No weeds either. Have several units for sale. Have used these kitchen gardens for over 5 years. Simple to operate and inexpensive to maintain. Think of it - get your own fresh food year round.