I was curious to see what was going on with the grafted seedlings:
Nasty slimy broken down akadama. Look at the muddy Walsall pot:
Dug, scraped and hosed my way in to the root mass. Tough work. I will cut this root ball and replace it in sections over the next years. For now I took off 30% of the edge and bottom. I'll let it grow and possibly cut wedges into it in 2 years:
Fresh, stable soil:
What about the root grafts? Don't know, the mushy akadama made it impossible to see but they sure need a few more years of growth.