I am pulling for you but I am skeptical. It looks like those plants are pretty healthy at this point, but I agree that the lights need to be closer. The main advantage of cool-running lights is that you can get them close to the plants. I know that almost anything will work for the vegatative state, but I have yet to see pictures of something flowered solely by LED. I have a feeling that the yield is much less than desirable, but like flourescents, with enough of them you may produce some good bud.

I have yet to be convinced that anything is really worthwile for flowering other than HPS. I have however seen pictures of some descent yeilds with flouros, and this may be the only possible exception. I would love it if your grow here would prove me wrong. I would love to tear out my big fans and hot, electricity sucking lights. I would love to see this thread continued to harvest with nothing but LED's, but I completely understand if you must use other light sources.

they claim that each bar is equivalent to 100 watts of HPS
Yeah right. Does that mean while it's touching the plant? Even so, I doubt it.
Has anyone held a light meter the same distance away from these? I need to see this documented before I will believe it. I'd like to see the cost necessary to produce the same amount of photons in a room or closet. Better yet, the cost to produce the same yield. I wonder if this would give the LED's an advantage due to the red light it produces. LED's vs 600 watts of HPS and the necessary additional ventalation. Mano Armanie, man to man, no rules, just photons vs cost.

Thanks a bunch for posting this experiment. I hope it works out great for you and I would like to see more grows using LED's. I have a feeling that they are not economically viable at this point, but who knows, maybe pretty soon...

Good luck.
Opie Yutts Reviewed by Opie Yutts on . LED grow pictures So these plants are about two weeks old, germinated in custom organic soil mix under 200 watt CFL, then put under four LED grow bars and at first two, now one 42 watt CFL and as of yesterday an additional red LED light over one of the plants. I'm a real novice and haven't ever completed a grow yet, so tell me how my plants are doing. Rating: 5