organic [ awr-gan-ik ]
adjective 1. noting or pertaining to a class of chemical compounds that formerly comprised only those existing in or derived from plants or animals, but that now includes all other compounds of carbon. 2. characteristic of, pertaining to, or derived from living organisms organic remains found in rocks. 3. of or pertaining to an organ or the organs of an animal, plant, or fungus.
Can't be true organic if you are using synthetic sunlight ie HPS, MH, t-5 CFL, plasma generators, etc... Just sayin