I get it down to exactly 5.8 every time as per this chart: http://www.thctalk.com/gallery/data/500/user17219_pic14203_1233853343.gifWhat is your ph?
No I don't think so either. I notice that the veins are yellow, but when I look a sites who's writing about what could be wrong the veins are never yellow. Also I would think that the seedlings should be much bigger after 3 weeks...Hope you get it figured out spaizy. I don't have much experience with coco. From your feed schedule it doesnt sound like overnuting.