I am building an led light for my indoor hydroponic / aeroponic / foggaponic hybrid herb garden. I am currently using a 100W warm white LED module. It works fine but I am also building another RGB light and that got me thinking that since plants do not use green light I am wasting 33% of the light / electricity.
I would like to get a comparison between different light spectra and the efficiency that I can gain / loose by using different lights. Since white (normal or warm) LED modules are significantly cheaper than special grow lights with multiple spectra I would calculate whether it is worth paying an x amount more for non white modules or not.
Here are the lights I am considering ( assume they all have 100W output for simplicity ):
White - 6000~6500K color temperature Warm white - 6000~7000K color temperature Red + blue only
Finally I could use an RGB LED and customize the color to anything I wanted even changing during the day / season. Would this option be of any benefit compared to reg+blue only? I would generally want to keep my plants in vegetative stage so changing spectrum to force flowering is not really useful for me, this leaves only plant efficiency when it comes to different light spectra.