That depends on what all you can find. Take a look at what's available for you and post it here and I'm sure we can help you work through it. If you have trouble sourcing all of it, I would prioritize kelp, neem, one of the rock dusts (i prefer basalt, but i think azomite is usually easiest to source and least expensive) and oyster shell. Worst case scenario you can make it just fine with those alone with the base mix
If your mixing 20 gallons of each to get 60 gallons total, that's right at 8 cuft. I think a good place to start would be:
Insect Frass at 1 cup per cuft of base mix
2-3 cups total of your dry amendments per cuft of base mix (kelp, neem, blood meal, fish bone meal). I would do 1 cup per cuft each on kelp and neem then 1/2 cup per cuft each on the blood and fish bone meal)
2 cups of rock dust per cuft (basalt, azomite, glacial rock dust, green sand. That's 2 cups total, not 2 cups of each)
1 cup per cuft of oyster shell
1 cup per cuft of agricultural gypsum
That translates to:
8 cups insect frass
8 cups kelp meal
8 cups neem meal
4 cups blood meal
4 cups fish bone meal
16 cups rock dust
8 cups oyster shell
8 cups gypsum
I put the amounts in cups as a guide, but you don't have to be precise as Richard already pointed out. I don't personally use lime so check with
@Richard Drysift on t his as well as his recs for the manure. I think he typically puts a little in the bottom of each pot.
Richard, do you still do the lime when your using oyster shell?
