KaliKitsune
Well-Known Member
Its a suppliment, not a replacement.. There is a thread on it in the advanced forum.. Ppl seem to like the results, but its pretty anecdotal as of yet.. I'd jump on the band wagon since I'm a fan of flowering with HPS&MH together as far as bud quality goes..
HPS/MH does give out a fair amount of UVB, mostly the HPS and if you've gotten a horticultural bulb it won't likely have the required UV filters.
For any fluorescent grower UV supplements will be a must.
There are a couple of particular studies that prove UVB radiation is a major factor in THC production. One I remember from the '80s and then another I've linked below.
http://books.google.com/books?hl=en...CR0F&sig=g3XnFqd3UTz15ryFKVIDRLkypW4#PPA28,M1
You might find that some interesting reading.