So I usually grow in coco however I used to grow in Promix HP, which is what these are in except this time I used the coco nutrient formula 6/9 heads formula - with some calmag cause I have RO water, they are a little lighter than usual but they are doing really well.
I've always heard awesome stuff about using Head's 6/9 in coco but I still haven't gotten around to trying it. I should really buy at least some FloraGro to keep around because I find using just the Canna A+B lacks on the nitrogen needed during veg.