Low UVA/Regular UVB induces the production of flavonoid glycosides
do not go high uva it destroys what uvb makes
some uva makes a little more than no uva
In the USA the range accepted is UVA 400-320nm UVB 320-290nm UVC 290-200nm
In Europe the range accepted is UVA 400-315nm UVB 315-290nm UVC 290-200nm
The initial vegetative stage requires blue spectrum (430-466 nm) of light. The Blue light simulates the Endless Summer Effect as stimulate growth and Greening.
The later 'flowering' stage should be done with red spectrums (662-680 nm). The Red light is to stimulate flowering, seeding and fruiting.
Visible 400-700nm
UVC 200-290
UVB 280-315nm
UVA 315-380nm
Violet 380-450nm
Blue 450-495nm
Green 495-570nm
Yellow 570-590nm
Orange 590-620nm
Red 620-750nm
UVC < 290nm
UVB 290-?
UVA
Actnic
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