Flowamasta was using a small 26 watt CFL UVB source; he placed it only some 6-10 inches from the canopy. It only affected a few buds, but he reported that they were not only obviously a lot frostier than anywhere else in his tent, but that it was much more potent as well. This can't be chalked up to random variables such as different nutes or strains, as he specializes in runs of just one plant; therefore, the only variable was the light source.
Agreed that intensity is critical with UVB enhancement, just as it is with every other input. I plan to start low and increase until I find out what too much looks like, then back off- and take lots of measurements along the way.
