AeroFlo? hydroponic systems come complete with everything needed to start growing: Flora Series nutrients, clay pebbles, net cups, pump (excluded in AeroFlo? 60 extension), support structure and manifold. Legendary growth and yield are the hallmarks of the AeroFlo? line. The AeroFlo? super-oxygenates the nutrient solution to deliver oxygen, water and nutrient in ideal ratios, creating the perfect root environment. The results are stronger, more resilient plants for increased yields. Perfect for flowers, fruits and vegetables up to 4 ft tall. Bring your plants to harvest earlier and maximize the productivity of your grow space with the AeroFlo?. The AF18 uses 4 ft chambers and the AF 30 uses 6 ft chambers.