Help, MG Organic Potting Soil

I'm currently using MG Organic Potting soil. I will later on mix it with Bone meal/Blood meal (NOT MG) and use two different bloom feeds for flowering. Will MG hurt my plants? How do I make it not if it will? What should I feed my plants and how often? This is outdoors! Thanks!

should be fine .. its realy low in ferts

I can add ferts right? Are there any dangers of using it?

Come on ya'll.

i use potting soil that has time release ferts for 6 months i probably could give it extra fertilizer but its doing great without it.