I'm not real knowledgable on soil growing but here'd be my guess.....overfert and perhaps ph.

Here's an excellent link to check....hopefully it helps.

International Cannagraphic Magazine Forums - The Complete guide to Sick Plants,pH, and Pest troubles!
Weedhound Reviewed by Weedhound on . One Plant Dead? Here is a link to early pictures http://boards.cannabis.com/plant-problems/127172-overwater-fertilizer-pics.html It looks like one the plants has died. Yesterday the top 3-4in of the plant was droopy almost facing directly down so I cut that top part off I figured it was done anyway. The leaves were really shriveled like you can see in the picture. I just topped this one about 4 days ago and topped one other about 2 days ago. Does anyone have a good link with pictures on how to top Rating: 5