whitebb2727
Well-Known Member
You are right.I definitively think that is is very strain dependent. Ive had a few UVB bulbs the Agro max was the latest. Twice it really fired up indicas even with good spacing ~28". Other times it looked as if the plant was barely affected. I did exposure on several different intervals. Some of the indicas seemed to suffer with even 2hr daily exposure. Sativas fared far better. I also noticed that plants in much larger pots managed far better under intense irradiance in general.
I ended up switching out the agromax and dropping in the Hortilux Uvb. The plants love it. It's not as much UVB exposure but they respond to the spectrum and it gives some uvb. In a few weeks, closer to flower I plan on getting the Agromax back in there.
I gave the advice to run the pure UV the whole time. The thing is I have only don't one run and the start of the next. They all handled it.
That doesn't mean that it will work for all strains.
I won't be advising people to run them full time. I'm actually going back to the 10,000k+uva bulbs.