Hey guys, I know I could probably google this, but I figured I'd get more trustworthy responses here. Can LEDs be used for growing? If so does their lack of heat help, or create different sets of problems? It would seem to me that LEDs, being so energy effecient, would be a more 'green' way of growing indoors, and by reducing heat would further produce energy effeciency by reducing the need for fans etc. Thanks in advance.