12% Arcadia Uv-B Light

Please I'm a noob in Uv-b I'm using a 600w HPS light on a 4'x4' box I'm starting week 6 of flowering and planned to add a 39watt arcadia uv'b 12% light on my box to enhance THC production by 6hours/day trough week 6-7 and 8. Can you please tell me if 39watt is enough power for the box and how high should I hang it?
Thanks a lot

4x4 with a 39w .............hell no u would need 20 plus

for what u want to do u need 4 foot t5 bulbs.............i would use the UV with the finisher light
http://www.ebay.com/itm/T5-BULBS-T5HO-HIGH-OUTPUT-FLUORESCENT-LAMP-2-4-ft-GROW-BLOOM-UV-1-4-8-25-packs-/160895821950?pt=US_Hydroponics&var=&hash=item257623687e

and it does not make more THC it makes more resins thc is part of it but not the only thing ...........it forces the plant to make the resin to protect self from the UV

I think he means in addition to the hps.

If I may suggest a metal halide swap. Youll get more UV imo.

thanks for answer more UV with MH light than Arcadia bulb and t5

tropzy said:

thanks for answer more UV with MH light than Arcadia bulb and t5

Click to expand...

if u got the ballast for it
http://www.solis-tek.com/digital-lamps/mh10k.html

they are ment for digital ballast only (at 100% if u have dimable)