This growing system features a water circulation system that drives oxygen circulation inside the water tank and allows the upper roots of the plant to absorb more nutrients, growing plants 5X faster than the traditional soil planting method. It also includes a 1.5L independent spray humidification system and custom-built spectrum LED grow lights that can be adjusted in height and switched between different modes. The price drops from $69.98 to $59.98 to just $29.99 when you apply the coupon code "50HV3W7V" at checkout. Shipping is free for prime members or on orders over $35.