I use a couple fluorescent bulb from a company called "Eye Hortilux", it's a line they carry called 'PowerVeg', the one I use is FS+UV, I think 10% of it's output is FS(Full Spectrum) and the other 90% is UV A+B...I ran them on the exact same timer as my actual lights, so 12 hours/day in flower and never had any problems![]()
High folks.
Saw this thread following Advocate.
Here is my contribution.
Feel free to make your own assumptions.
![Pass It Left :passitleft: :passitleft:](/community/styles/420style/smilies/passitleft.gif)
UV-B
I was 1st fascinated by UV-B when I watched a video on the Tube posted earlier in this thread.
I figured I would buy two reptile style bulbs to use during last two weeks of bloom.
The results were that I basically fried the leaves a little at a time.
If you got time to kill Stage tries uv-b bulbs
Next I tried the Eye Hortilux powerveg bulbs.
I have two 6 bulb T5 fixtures.
Each fixture has two of the FS+UV-B bulbs.
I use them from cloning to early veg.
![IMG_20180118_135532.jpg](https://www.420magazine.com/gallery/data/500/IMG_20180118_135532.jpg)
Lastly I use the Philips CMH/LEC 3100k bulb for veg / pre bloom.
This bulb has a healthy amount of UV-B and is a fantastic veg spectrum along with a good dose of UV-B.
![veg_tent_view_week_8_before.jpg](https://www.420magazine.com/gallery/data/500/veg_tent_view_week_8_before.jpg)
I sometimes bloom with the Philips CMH/LEC and or with LED cobs.
The results are to my liking with out frying the leafs.
I suggest staying away from purpose built UV-B bulbs like what you have.
If you want to add UV-B get the LEC or Powerveg FS+UV.
Ultimately the goal is increased resin.
Be mindful that there are other ways to accomplish that without leaf damage.
![PG_bud_closeup_3_week_8_bloom.jpg](https://www.420magazine.com/gallery/data/500/PG_bud_closeup_3_week_8_bloom.jpg)
![PG_cola_shot_week_8_bloom.jpg](https://www.420magazine.com/gallery/data/500/PG_cola_shot_week_8_bloom.jpg)
![blue_magoo_bx2_cola_week_8_bloom.jpg](https://www.420magazine.com/gallery/data/500/blue_magoo_bx2_cola_week_8_bloom.jpg)
Stage out!
![Surfing :surf: :surf:](/community/styles/420style/smilies/surf.gif)