What distance is that from the light?
It is 1' from the majority of the colas, and 6" away from those two tall ones. It is hard to tell from the angle but those two tall ones are also not directly under the light. I just checked and measured for you this morning.
No burning on those two, but instead a lot of frost building up. So I think I'll be ok, but if damage shows I still have room to raise, or I can move that tall one to the other side where I could just raise one small led board up to the right spot.
When I was in there this morning I forgot to show off this dual temp/RH controller I got for my external exhaust. Fyi nothing is connected to it's humidity output, dehumidifier is on outside of tent. Still dialing it in to find that vpd I want.
This is a little after lights on this morning, the RH will drop with the heat to about 50%RH.
And got roots on my last set of clones, I think it's been 9-10 days, I'd have to look. But I don't think I'm at the 2 week mark yet. So I'm definitely getting better