" I add some of this to each baggie and add a pinch of osmocote type slow release fertilizer " What is this? Obviously it's the planting medium but you don't say what you use. It looks like a milled sphagnum based medium with additives.
In any case your seedlings look so much stronger than mine that are in pots. I haven't used osmocote and am a little hesitant on feeding such small seedlings.