Plants need a full spectrum. For twenty years we have been depriving our plants of love we could give it. You dont see them using HPS in the cast research grows. it is a combination of induction (plasma) and high end led where certain plants thrive under certain wavelengths. The science is restricted so it is a test for us all. This is no bandwagon anymore and its probably time we started to publish all we can in regard to new lighting. Personally i will be growing under Plasma lighting with added leds, It will give me a total full spectrum like the sun on earth and on top of that i am ramping up on the blue and red, obviously vital for veg andflower. The plasma units are actually cheap in comparsion to generating the same light with LED.