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They are definitely cool. I can see why NASA is interested in them. Low energy use, compact, long life. They will need something for those 2 week long lunar nights for any future bases to be located there if they are going to be self sufficient. Hopefully the technology can make a leap.

That thread was full of a lot of garbage and bickering, could have been 2 pages long and covered same info presented...but I am now skeptical of the LED claims. Maybe for the mothers, but why waste couple hundred bucks when some CFL's will do the trick, right?

Hmm, very interesting read. I know how good the HPS and MH lights work. Thats all you hear about. I was looking for a way around the heat/energy consumption. I will have to read more into this, but I have definitely been made a little weary of using LED's. It will be interesting to see how that...

Hello all. First post here. What an awesome website! Anyways, was wondering what thoughts are about LED lighting from people that have/do use them. Plants will be in a sealed, insulated enclosure approx. 2ft deep/6ft wide/6ft tall, in a basement in northern MN....yeah, gunna get a little cold...