Trichrome increase in the last 3 weeks?

Basic Growing Info
22

UVB will increase THC production UVA won’t do that. You need the very low end of UV ( around 280nm-320nm.) to trigger the UVR8 protein which then triggers the THC production. There are no LEDs today that produce that spectrum at a usable amount, so any LED based lighting is not giving you more THC and are a waste of money. Only UVB fluorescent bulbs produce a good amount of that spectrum.

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