Dying plant? Chances to recover?

[Beginner1992]

I have a huge problem with one of my plants. I thaught it was a light burn/heat burn at first, so i cooled down the grow room and set the light at a lower intensity. Finally after much research, I'm pretty sure its a potassium deficiency. The problem is that it's been going on for a week now and it totally degenerated... I'm afraid my plant will die now.I just fed it now with shrimp compost and chicken manure...I'm really a beginner but this one was going so great untill last week.The strain is Stress Killer automatic and its now week 7 from seedling. What do you think? And does it have a chance to recover?

http://imgur.com/pXIHJDW

 

[D.A.A.S.69]

Hey 1992 , there's a good chance that plant would recover if she was in a larger pot, I'm thinking you have root problems from using to small of a pot.