Sick Plant PLEASE HELP!!

[Morgosverlo]

This plant is about 4 1/2 weeks old and noticed discoloration on the older leaves. My system is a large scale version of the AEROGARDEN. My resivoir is 10 gal. w/210 hpg pump and an aerator w/stone. I have 3 baskets with this system growing in clay-ball media. For nut solution I am using this worm casing solution I picked up at my local hydro store(1/4 cup/gal.). Please take a look at the pics and tell me what you think.

 

[That crazy vancouver guy]

buddy... worm casting ferts is VERY strong stuff... you might be giving too much nutes... I'd give straight water for a bit, then only try 1/2 the dose of casting ferts and see what that does for ya.