J, your the man bro, love you dog. Well, on to more important things, what brand coco are you using? This can play a big role in coco grow problems, also for the most part it is best to grow with coco spacific nutes. Not all coco is pre flushed and can affect the grow in the long run if not thurowly flushed from the out set.
Did you feed with every watering? You are using an ebb and flow table, it can be tricky recerculating water when using coco, that is why alot of people go run to waist with coco. How often did you flood , more than 2 times per light cycle? Did you use the coco slabs, or fiber in baskets?
PS, I am doing some coco runs right now with GH coco, not pre flushed, but so far so good, but IMO Canna coco and coco A and B nutes are the best.
Most popular at this point are the Advanced Nutrients Monkey Juice http://www.advancednutrients.com/lan...B_landing.html and Kanna's Coco A and B http://www.aquaculture-hydroponics.c...productID=1398.
We can start here and then try to figure some stuff out.
Some coco Porn, so don't give up hope, http://www.icmag.com/ic/showthread.p...highlight=coco
Adieu