Underground farming is the practice of cultivating food underground. Underground farming is usually done using hydroponics, aeroponics or air-dynaponics systems or container gardens. Light is generally provided by means of grow lamps[1] or daylighting systems (as light tubes).[2] Sometimes, special modifications are done to improve the system even more. These can include water-jacketed lighting system, NFT double pass growing system with moveable racks, ...[3]