actually that is the grow light and yes you can move it as it is adjustable to the plants height. also i thought you all would like to know it is possible to grow ganja with the aerogarden. i know of like 20 people on another m-board doing it not to mention i own 3 aerogardens myself,lol. i haven't grown any with them yet but a grow room is being constructed as we speak so ill keep ya'll up to date but yes needless to say, it is absolutely possible to grow using the aerogarden.