the big advantage to these bulbs is they claim they grow plants as well as hid lighting, they are very energy effiecient 10watts instead of 1000watts they are cool (no airconditioning, fans) which means no helicoptors picking up heat signatures, now they do make uv led lights I wonder if that's what there using??? they dont depend upon lumens but upon the wavelength of light (they claim 100% usage of wavelength) now this all sounds well and good but the real test would be growing with them.