Genie,
I see some problems with the page you referenced. My first concern is they're charging $500 for 25 watts. Even if they have the perfect spectrum, 25 watts probably isn't enough--probably more like 50. They seem to be using low-power emitters, which don't penetrate/travel far.
Their graph is so small, you can't tell what it's supposed to be, but it's totally different from the graph someone else posted earlier in this thread depicting the spectrum response of cannabis. Cannabis doesn't care much about orange light, and even less about yellow light, if the previous graph is correct. Plus, there should be more blue LEDs in at least two wavelengths, including violet (not just ultraviolet), etc. Some people say UV doesn't even stimulate a growth response (the web page doesn't even seem to claim it does, if you read carefully.) In fact, they don't seem to be designing for cannabis, which, for LED, would be mandatory, so far as I can tell. Perhaps this is optimized for tomatoes, or something. The point of LED is not wasting power on the portion of the bandwidth you're not interested in.
In short, the purpose of LED is not to reproduce the full spectrum--it's to try to reproduce the spectrum a specific plant is interested in. I don't think this light appears to provide it in quality or quantity--at least for cannabis.
It's a pretty pattern, though. ;-)
I'm still waiting for someone to get big buds from LED light, and so far, many people have put in an honest effort but come up short. I salute all of you for your valiant attempts. Keep posting your results!
