[zolar]

i have seen articles on mj friendly boards about this and apparently
adding more uv-b does help an indoor grow however CMH MH and flouros already do emitt more of this than incandesant bulbs
bulbs that do mainly uv or are tanning bed bulbs could blind you nfrom exposure without eye protection
i remember a few years back i turned on the high uv output light in my hospital room and few asleep and my eyes were burning and the doctor and nursesbith bitched at me and toldme that weird realblue bright light was germicidial uv abnd it could blindme but most strains of herb that had ancestors in the himaleyas have a much higher amount of uv in their original
locations