Any idea what's wrong here?

[DannyGu]

Any idea what's wrong here?
tnx in advance

 

[GrimReffer]

Ph or watering practices but more info will help. What are you growing in what kind of nutrients how often are you watering? Stuff like that will help everyone diagnose.

 

[Trixie]

Looks like you are burning your plant with too high of an EC. How much fertilizer are you using and what kind of substrate are you using?

 

[mysticepipedon]

Are these all lower leaves? Can you take a better pic of that plant? It's kind of taken from an odd angle.