how much uvB do I need?

[Shedman]

I am currently growing in a 1x1x2m grow tent with 400watt daylight led lights. I am getting excellent grows with healthy plants but am thinking of supplementing the daylight led set with an additional uvB lamp during the latter half of the flowering cycle to boost the terpene, THC levels etc. How strong/how much uvB should I expose the plants to.
I was thinking of a 4 hour exposure in the middle of the 12 hour light cycle but not sure how strong the uvB lamp needs to be.

Can anybody advise me what sort of wattage lamp or even specific uvB lamp I can use to have desired effect.

Many thinks for any advice.

[dilvish]

Adding more full spectrum can definitely increase yields but I am not sure that additional uVB would make the pants more potent...proper curing can do that on it's own...

[Shedman]

ive read several articles that adding extra uva or b to the spectrum during flowering stresses the plant and it produces more trichomes etc as a natural "sunscreen"

[TOKABIGONE]

Shedman i agree with dilvish about full spectrum light vs uvB. I have read a bit about this and found no conclusive evidence either way. i would consider it an unnecessary expense. Kinda like mushrooms in the tent for CO2 production...snake oil unless you have 2000 plants in a large facility. Then you would use tanks. If you do this please let us know what you learn! Happy Pharming!