The bestselling LED just got better. Redesigned for 2013, the BlackStar 240W UV is perfect for any size grow. Each unit covers 6 square feet (3"x2"). Use them in bulk for nice even coverage over larger areas. The BlackStar line has the best selling LED Grow Lights in the world for a reason - YOU CAN"T BEAT this combination of power and price. For this price you can gang them up and have a wonderful uniform grow and still get the peak PAR penetration that the 3 Watts chips deliver. This unit has 6 Bands (6 unique color wavelengths) and uses 3W LED diodes for the best possible light penetration.