Yellowing tips and edges

Ease up on your nutes. You burnt them.

 

I agree it looks like nute burn. But for your own reference, here is a sick plant guide with pictures that will teach you alot about deficiencies and different types of stress and what it can look like. I recommend reading through the whole thing.

http://www.icmag.com/ic/showthread.php?t=11688&page=1&pp=15

Hope that helps