UV lighting?

Ive heard some things about ultraviolet lights and how they can increase thc output in the flowering stage. Is this true?

I would say Yes most def- Since switched from Sodium to hailide in flowering I have seen a massive increase in crystal producction. Hailide emits UV where as Sodium I dont think emits any- I havent implemented reptile lights or anything like that as am well pleased with the Halide!