I dont know if this helps but I have spoke with Phillips in the Neitherlands a few times and for balanced plant growth as different vitamins are produced and broken down at different wave lenghts, the proper spectrum consists of 5.3%red 36.3% blue, and 58.3%yellow light to get a proper average. Nanometers can be converted into Hz. I was working on a project to try and grow using acoustics a while back as Hz are the direct opposite of Nm. Say if the pure light of the visible spectrum of the rainbow starts at 375Nm and ends at 750Nm then 750Nm = 375Hz and 375Nm = 750Hz. It is all about the wavelenghts.
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