Pro200 Brushed Stainless Steel AeroGarden uses microprocessor-controlled Adaptive Growth Intelligence to monitor plant growth from germination through advanced growth and instantly adjust water, nutrients and lights to give plants what they need at each stage of growth, maximizing yields. Up to 50% larger yields. Includes grow light replacement reminder system and the Super Grow 24-hour light cycle. The Pro200 comes with 24" adjustable arm and three deluxe grow bulbs which deliver and twice the light (in Photon flux) and twice the height for faster growth.