N toxicity or what? Share your experience

[MrRudeSnowman]

Hi,

Once and for all - what is the problem in this picture?

PH flux? PH to high? N toxicity or lockout?

Usually i run into this problem with every grow at later points...

What would be the actions done?

first pic is a suspect for some heat damage, i admit that... but lower picture bud has not been close to lights at any time.

 

[Major PITA]

That's a new one to me. Of your choices, I'd sat a little hi on 'N'. But if I was going to take a guess w/o any information, I would have to say it sort of looks like a light leak or unstable photoperiod.

 

[MrRudeSnowman]

NO light leaks for me.

 

[jhfhklsnhfldk]

I'll take a guess too. I agree with the high N, but by the way the leaves seem to be curling down would suggest they are trying to flee the light. Is it possible you recently lowered your light? Really just a guess from the pics. Usually twisting and curling is cal deficiency, but if I lower my lights too quickly, the leaves will bend away (or downward) to avoid it.