Blue Fire (blue dream x fire OG)

hello! welcome to my journal! This is start of my blue fire (blue dream x fire OG) grow. First time growing with Humbolt and looking forward to the experience. I have chosen to follow the canna nutrient line, mainly used organic products in my past grows. I am curious to see what the difference is. In the pictures are all of what i plan to use, minus Canna start, Canna Rhizotonic and Cannazym which should arrive tomorrow.The two plants you see in the pictures are Dinafem Critical +2.0 and Amnesia, both autoflower day 36. ( One on the left is the Critical+) A small trial run as I haven't used coco coir or Canna before. Thought it wise, so I can go in to this grow with at least partial confidence. So the seeds (4 out 5 so far) have cracked open with the tip of the root poking out (36hrs). I have prepared my starter pots with a half strength solution and placed on a heat mat to get ready for planting. I will be starting the nutrient plan (pictured) from what would be week 2 on this, when the seedlings have sprouted from the coco. 4/5 have sprouted on 13/03/19 but 3 of these still have their shells on, i tried to remove them but still really secure and i risk damaging them. I'll look again tomorrow. So the fifth has sprouted. I'm surprised that in 24 hours the seed has cracked and almost caught up to the other four! The shells have naturally come off also.