HELP! Leaf looks burnt

[416grow]

Hello,
I noticed a problem with 2 of my cannabis plants today I didnt see any problem yesterday.
If anyone can help identify this problem that would be a great help.

 

[Jordann]

What kind of light are you using and I think it's too close to the plants. How bout some pics inside the tent where she sits normally.

 

[416grow]

Hey Jordann,
Im usinng a 1000w MH. This problem is only on 2 of my tallest plants so your right and thanks for your help.

 

[Jordann]

No problem. Might want to bring it up like 6 or 8 inch then start lowering an inch every few days till you find the Sweet Spot where it starts to burn then go back up an inch or so.