That chart refers to the entire light spectrum. It doesn't say anything about amounts of UV-B. it claims that it does nothing at all in the 315nm-400nm range and that 280-315 range is harmful. Look at the charts on Arcadias site. Both the 12% and 6% bulbs give of the majority of their light in what appears to be the 315nm-400nm range and the 12% just gives off more of it. Although 6% Forest bulb does have a more varied spectrum. I thought the whole point of my LEDs was to cover the rest of the light spectrum my cannabis plants need

