Soooo, I know that sunlight is harmful to beer. I am bottling into brown glass, so that part is covered. But for primary fermenting, I'm using a clear glass carboy, and I'm keeping that in a closet. (Secondary fermentation, if I do it, will be in a dark green glass carboy.) Ninety percent of the time, the light is off in the closet, but there are occasions where the fiance or I forget to turn off the lights, or I'm going in and out frequently for a couple of hours and leave the lights on.
I found an answer regarding flourescent lights, and another answer for incandescent, but my lights are halogen track lighting. I don't know enough about physics to say for sure, but I'm guessing that the answer is similar: halogens won't have a tremendous effect.
Is this correct, or do I need to be super-vigilant?