I have been reading about UVB light and how HID lighting has little or no UVBs. Ed Rosenthal suggests adding 10% UVB light to your existing HID light. I use a 1000w HPS for flowering and wondered how much improvement would I get if I added 2-50w UVB bulbs to the side of my light reflector or to my light rail? Has anybody done this or something similar?
Thanks
Thanks
