Quote Originally Posted by oldmac
Yo' weezard, I ain't done with 'ya yet. This experiment is not concluded plus I might need your thoughts on light wavelenghts.

Anyway I can be of service, do not be shy.

As to a two day set back, I believe that's all there is, they still got battery backup fluros (12v dc camping lights) plus my far red incandescent trigger lights. So thier schedule was not disrupted at all, just not enought light to grow for those two days.

I found some info on the leaf thickening, a result of UVb for sure. But in this case they are flowering in a rotating garden and the plant auxins are screwed up, so the plants don't know which way is up or which direction the light is so I don't think it's the leaves turning edgewise to the light.

You missed me, my friend.
This effect has naught to do with the leaves themselves.

This "edging" happens on a cellular level.
The microscopic thingies that process light within the cells are shaped like disks, lots of them.
When light is weak, they lay flat to absorb more of it.
Then, the leaf feels thin.

When the light is too strong, or a danger, these disk shaped cells slide into a "rool-of-coins" shape that presents only the edge of the cells and protects them from damage, but this makes the leaves feel thicker.

I'm way too baked to even search for the original paper that details this effect.
When I'm able, I'll dig it up for you.
It's a fascinating read and one of the things that made me question the value of UVb for Cannabis.

As of last nite, trichomes are abt 20% cloudy the rest are clear. So at least that's heading in the right direction.
Added some snaps to my album that you might enjoy.
Couple led grown "droolers".

Aloha, OM

Weeze