Why LEDs make bad plant lights (facts + pics!)

[Arvax]

Just made up a LED Luxeon array to test
( mix of blue and red 3W LEDs).
As far as the spectrum I am using this chart...
Botany online: Photosynthesis - Absorption Spectra - Chlorophyll a and b

Since I am concerned about power cost I matched the number of LEDs and type ( Red and blue have different voltage drops ) to equal 12V so no dropping resistor is needed.

[Ocelaris]

Are you running these constant current off of a power module? I'm curious! Love to see how it works out!

As far as power cost is concerned, If LEDs are more efficient per watt, they might be more efficient over fluorescent or HID, but as far as a white LED is concerned, they're still lumen/watt behind fluorescent and HID... so far. But again, if Red and Blue are are what the plants need, they might over power straight white light. Take some pics!