I have done some searching on the internet regarding photomorphogenesis, and discovered that far red light
is important in the induction of flowering on certain plants that need a long night to signal flowering. I was able to
purchase some 730nm leds, about 1000 of them for $100 and
construct an led array to provide a flash of 730nm light at
the onset of the dark period. This shortens the required amount of darkness for flowering by several hours. There are certain internet forums that have information about LED indoor growing, but I'd have to find them using google search, since I have a new computer, and all my bookmarks have vanished. To me, photomorphogenesis is one of the most useful aspects of LED's, because the exact wavelenth can be ordered. In my case, they actually did a custom run.

too far in the red spectrum. Try 620-660nm. (I don't work for SolarOasis but I'm an optical physics major with a minor in ethnobotany.)

We need UVA/UVB LEDs to help emulate some of sunlight's natural properties.

Just food for thought. :)

Read the post again, khyberkitsune, it clearly went way over your head. Those 730nm LEDs are not for growing, they are for faking out some of the plants photoperiodic responses.

I've always found that unless you use more LED units than recommended your plants will get a bit lanky.