Northern Light, Help please.

[Mr.greeen]

growing in soil,she is at 55 days, i noticed this a couple of days ago, it started from the top of the plant. I suspect I might have overfed her and it messed with the NPK balance. Looks like potassium problem? Thoughts?

 

[Fuggzy]

I've not had a K def before, but from what I have read I would say you are correct. This is just a reference pic.

This is a K def.

I'll keep an eye out here as I'm interested too. Take care.

 

[Waira]

-- Hey bud, what did you feed (NPK #'s) and how much? It begs the question of if this is a toxicity, not defc. issue,.. early symptoms ironically can overlap with both sometimes ...and the other usual diagnostic co-symptoms haven't started yet,... do you have a soil pH measurement? What are you growing in, BTW?

 

[Mr.greeen]

I fed her this NPK solution, 6-8-8, 15ml in 2 litres of water. Looking back that sounds like way too much And she was perfectly green a week ago.
I did give her a little flush yesterday but its hard to tell if there is a difference, gotta wait it out i guess. No ph numbers, growing in regular garden soil. Thanks guys!