Ummm.... How about using the usual red, orange-red, blue, royal blue, and add some of those WHITE ones to round it all out? Their spectrum goes from way blue to some IR.

I guess I should've put this up a ouple years ago, when the right LEDs came out.

Anything under 3 volts per LED AIN'T gonna fly!
maik Reviewed by maik on . Light spectrum research Due to my LED total fuckup :)) i had carried out a little research. Used various sources, and they state various date for instance Alphabetical Index of Photochem CAD Spectra different absorbtion spectra for alfa in methanol and ethil. Here is tha spectrum I have figured out for now. chlorophyll a 420 660 chlorophyll b 430 625 b carothene 450 P680 Photosystem II Rating: 5