Didn't you read the Plant Problems thread? Your pics aint brilliant quality, especially the first pic. Check that thread and compare what your leaves look like to the pics there as you will best be able to compare.

What are your nutes?
What are the recommonded doses?
What phase/week are you in?
What is your grow medium?
What have you done up to this point?

Definitely looks over fertilized to me and over watered. I would flush with 1-2L ph balanced water immediate and leave for 24 hours. Then check grow medium moisture levels then feed 1/3rd - 1/2 dose for a couple - few days, flush for a day and then step up the feed ensuring to flush every 3rd day to prevent build up of unused chemicals.