Here is a chlorophyll activity by wavelngth chart in K rather than nm. (Spectra in bulbs are usually shown as K rather than nm)

Learn it. Live it. Love it.
Volker Reviewed by Volker on . What is the light spectrum curve absorbed by cannabis Need a light spectrum absorbtion curve for cannabis, need it for my diy led lighting with 100% PAR efficency. I think it will be intresting for us to see how the plant will grow and etc... Rating: 5