They're a game changer, in terms of energy efficiency and brilliance. I know nothing about growing, but in my stage lighting rigs, I use LED exclusively (except the projectors, but that will change next year). Every time I see the header LED grow lights I think about how awesome my LED's are, so I thought I'd chime in here to praise this technology.
I'll second LED's as being superior in terms of cost efficiency vs metal halide or sodium lamps. I have a stealthy microgrow setup in my bedroom (currently not being used) and I got a single 90W LED growlight. My very first grow attempt ended up being two females (bagseed genetics) in a Mylar tent with the 90W LED. Growth was healthy, strong, and rapid and the girls made some great buds. My only upgrade for next time will be a 2nd 90W light. More light = more growth!
Heya LED is the best. I just ordered a 600W 3w LED. As I understand it is the best at the moment and at a price that is more than ok. Ordered it from Pulsargrow.com they incl Vat,shipping and customs to most countries.. Fucking hell yeah. Gonna be great.. will post a picture of my indoor garden later on.. Thanks pulsargrow.com
yeah , i am agree with you. LED is amazing,energy smart, longer lasting, stable in tough weather.....anyway, it's green.Christmas led are awesome
For anyone who wants to know more about LED grow lights, i have written an in depth review on them at http://hubpages.com/hub/LED-Grow-Lights-
the lights in the picutre are not LEDs, they are too thin to be a led light, LEDs are great, but they afraid of heat, so LED lights have fan on back , they can't be too thin~
seems that led is changing the world, not only for commerical lighting, but also for greenhouse, farm, auqarium lighting ya...