First Grow Issues

[Greenman]

Everthing was going well until this problem with the leaves began. Any thoughts about what the issue might be?

Indoor grow, under LED's.

 

[Jobe]

Mate that looks like to much potassium In the water,

 

[Colombo]

cannabis-symptoms-pictures Welcome to GWE Greenman ! Can you give some information on you grow? Watering, soil, feed,etc. It appears to be a few things but need more info. I attached the GWE problem page should help also . good luck. Good Growing !!