Light burn or deficiency???

[Papapuff559]

Woke up this morning and found a couple of leaves with browning on the serrated edges. I'm leaning towards light burn but would appreciate an experienced eye giving their opinion. Grow info is included in link

 

[vostok]

22 views and no comment I'll throw!

slight nute burn ..

IMO miss a few feeds

or maybe its potup time?

good luck

 

[Gluteous]

Light burn would affect the top of the plant more than the lowers. That looks like nutes.

 

[Papapuff559]

Thanks for the help I'll give her a flush

 

[CaptainWiese91]

I would say slight nute burn also. If you look on the lower leaves - their tips is also burned