Yes, one Mars led or cob of about 200 actual watts (400w advertised). I use 1 Mars 700w (320w actual) and 1 400w cob over 1 square meter 3.2ft X 3.2 ft SCROG with great results. You must SCROG with led's as they don't penetrate very well past say 6-7". If you want your plant to grow fast and be...