Quote Originally Posted by Rusty Trichome
It's looking like either nute burn, or additive burn. Do you add any Superthrive, or any micronutes? Do you foliar spray with anything other than ph'd water? Do you know the runoff ph?

Nutrient burn starts showing along leaf margins and tip, filling-in the neckrosis, (brown, dead) from the outside edges, in twords the middle of the leaf.
Leaves will crisp-up and problems will accelerate.
I've got a similar problem, rusting/curled leafs (specifically the ends)...

My problems undernute and lockout.. it's interesting how overnute looks similar, I'd definately expect your case to be overnuting like rusty suggests... definately some sort of additive/nute/lockout burn...

Good luck to solving it dude :-)


ahh see you have solved things, well done.. ;] be careful the next time you see it , it could be undernute or lockout hehe; I must be careful not to misdiagnose a problem as it can make poor plants die

Here's hoping theres never a first time for us both. Yup it's true never unintentionally killed a cannabis plant!

Peace,
Denial