Quote Originally Posted by Opie Yutts
They work fine for vegging. The problem is, nobody has come out with an LED system for budding that can come close to the results HPS will give you. And of course, LED arrays are damn expensive, but this will change in the near future.

Actually, the red led is better than an HPS. The red spectrum it puts out is more easily used by cannabis plants during the 12/12 flowering cycle. There is also a blue LED that is the right spectrum for vegg.