UV Light - Best way to provide

Does anyone have experience using UV light as a supplement along with HPS during flowering? The research seems to indicate a strong correlation between UV exposure and THC development. The question is how to provide the most economical source for the UV. This last grow I used a 250W MH (mogul base) along with a 600W HPS. No glass in the reflector. Results seemed to be better. I'm thinking of setting up a pair of double ended MH bulbs in the reflector. It seems that double ended bulbs don't block the same level of UV as the outer jacket on mogul base bulbs. Any guru's out there with some real experience in this arena?

aint no expert but i read some things. Burp. Lol, Uv light i guess stimulates or attacks the plants into thinking they need to produce more thc to survive like sunblock. It's true. Like at the equator. Thc is their sefense i read. I aint no expert tho. Also the glass in the hoods has to be QUARTZ glass or else it will block like 3 % of light. The part it blocks tho is a special band or someting that plants really love alot. All galss blocks it except quartz glass so if yu get better results w/o glass its becasue of this light i read.

From what I have gathered (haven't experimented myself) the best, most economical, source of UV-b light is from your friendly neighborhood "big ass" pet store (Petsmart or Petco, any good pet store).

Look in the Reptile Suppy Dept., for "Reptile Sunlights". They come in both CFL's and regular flourescent tubes in various sizes. And the best part is, they put out a good ratio of UV-b light (I think it's like up to 20%).

i was thinking the same thing.. https://www.rollitup.org/cfl-growing/109388-flouro-reptile-lights-uvb.html
they may not be good primary lights but for supplemental lighting it should work. i have an iguana and have these lights so i might as well. i think the strongest uvb it puts out is something like 10% and maybe like 30% uva (from what i remember) and the 4 foot bulbs are 40 bucks a piece. they also have the screw in type flouros.

Yeah, that sounds about right Dr D. D.! Another thing that I recall reading is that you don't need to let the UV light stay on for very long at a time, something like a few short bursts of a few minutes each - spread throughout the day, should be enough. Also, don't be careless - UV radiation can be dangerous!

The UV-b light is a supplemental light, for sure! Only to be used in addition to regular grow lights!