"HIGH TIMES reviewed the ufo (90w) vs. a 400w hps lamp, and found that the ufo yielded more bud, healthier plants, and even a slight increase in resin levels and saving that 310w will actually pay off the ufos addiditonal cost (300-400$ more than most 400w rigs) over the course of a year, or just slightly more." -hybridlove420

Can you find a link to this?!? That is completely unbelievable to me. L.E.D.'s have an aplication, just not growing. Also, the ratings some manufatures give on their "super-high output" L.E.D.'s are almost lies. I looked around a bit and found a prototype white LED supposedly achieving 150 (Lm/W). The rating they gave it was VERY misleading. You might notice that it was rated using Lumen's per watt of light output, not per watt of electrical input. It was emitting 420 Lumen's at 8-watts. Witch is 52.5 (Lm/W) by my math. :wtf: They are trying to show some advancement, maybe to get some government funding?? Like wind and solar maybe???


Here are some Lumen's per Watt of common bulbs:
Candle : ~.3 (Lm/W)
Incandescent : 20~24 (Lm/W)
Halogen : 30~36 (Lm/W)
L.E.D.'s : 26-70 (Lm/W) The high of 70 is for prototype white L.E.D.'s
CFL's : 45-105 (Lm/W)
Sulfur Plasma : ~100 (Lm/W) light output VERY close to sunlight, better than any other artificial light source.
Metal halide : 80~125 (Lm/W)
High pressure sodium lamps : 140-160 (Lm/W)
Low pressure sodium lamps : 180-200 (Lm/W)"

Make up your own mind on them with this info. :greenthumb: