The simplest one I know is as follows:
1 part Pro-mix
1 part Humus (Compost, EWC, etc)
1 part Aeration (Perlite, Vermiculite, etc)
Add:
4 Cups Rock Dust per cubic foot
1 Cup Dolomite Lime per cubic foot
1 Cup Dry Organic Fertilizer per cubic foot
1.5 Cups Kelp Meal per cubic foot
This will...