Well we try to keep it as simple as possible I’d add minerals in form or rock dust , maybe kelp would be good as for additional sea minerals one has to think that all the minerals trees pull from the soil all get return to the earth , grasses weeds they all have minerals in them , that’s why they say some weeds are more nutrious than supermarket salads and vegetables compost is wonderful stuff and will take you along way as far as soil health! Everyone should compost IMO!
Couple handfuls should do the trick!