To tight of a light spectrum depending on what materials the LED's are made of. Also, why don't they give the lumen output, scary. For that much cash ($189.95) pick up a 400w Switchable HID for a little less. I really don't think LED's are going anywhere, they are not even more efficient then a CFL for Lumen output per Watt used. Low pressure sodium would be the most efficient, but not for growing. So high pressure sodium would be the next step down in a efficient light source. Maybe Sulfur plasma lights will get better/cheaper soon??

Here is some Lumen's per Watt:
Candle : ~.3 (Lm/W)
White LED's : 26-70 (Lm/W)
CFL's : 45-105 (Lm/W)
Sulfur Plasma : ~100 (Lm/W) light output VERY close to sunlight, better than any other artificial light source.
High pressure sodium lamps : 140-160 (Lm/W)
Low pressure sodium lamps : 180-200 (Lm/W)
NorCal Grown Reviewed by NorCal Grown on . HTG supply LED spotlight Hey what's going on guys. I was browsing htgsupply and decided to take a look at their led systems. I came across this. http://www.htgsupply.com/viewproduct.asp?productID=52297 Do you guys think these would work for an entire veg and flower cycle for 2-3 plants? I haven't seen too many people using leds on this board. I thought these would be a lot better than getting a mh/hps conversion. Less heat, eliminates a fan, uses less electricity, and better priced imo. I would love to see if anyone Rating: 5