coreywebster
Well-Known Member
I get where your coming from, just not inline with what happened to me when I set up my QBs the first time.35,000lum and I tried raising with no change. If anything closer for more heat would seem to support the argument.
I'm gping to try upping my mag to 80 and see what happens, 80 isn't that high even.
Since LEDs don't heat surfaces like a IR light you would have to get very close to make a difference in leaf temp and would be way past light burn by that point.
My plants got destroyed in a few days when I set up my lights 12" away from canopy, they looked like every deficiency all at once.
Once I raised to 18" I never saw the problem again.
The other thing is your pics don't look at all like a magnesium deficiency. I could see why someone might think a calcium def and even a potassium def but magnesium deficiency doesn't look like that. But then I am sat here and only have a pic to go on.
I hope you get the issue sorted out regardless.