I have been readin about uv supplementation for a few years now. Even ed rosenthal showed it increased thc in his old book.
I compared an open reflector Phillips 315 cmh all last year. Although that is the only boosted uv I have used.
However. I have found that genetics and a stable growroom and good gardening can make more of a difference in flavor and perceived potency.
And frost. This is Hortilux super hps 600w grown.
View attachment 4176870
Uvb can boost the thc but it doesn’t boost other canabanoids to my knowledge. I think the whole “recipe” of canabanoids and terpenes in the flower is more important than just the thc content.
Also. The genetics I grow were bred under hps. Maybe hps can bring out the breeders vision better?