What does your soil test say?

I have real problems with the idea of throwing epsom salts around without a soil test saying there is a reason for them. The bone meal and iron probably fall in the same category.

I agree with mad_gallica...

Bone meal isn't water soluble, so there is no reason to add it to a "tea". Also, what type of soil so you have (sand, clay, silt)? Water solubles drain quickly through sand.