Supersoil Breakdown. Ingredient amounts per cubic ft. (7.48 Gallons) of base mix

This is the amount of each ingredient needed per 1 cubic foot of base soil:

2-4 pounds worm castings
0.42 pounds or 189 grams Blood Meal(approx 12 liquid ounces)
0.42 pounds or 189 grams Bat Guano(approx 6 liquid ounces)
0.42 pounds or 189 grams Bone Meal(approx 12 liquid ounces)
1 Tablespoon Epsom Salt
1.5 Tablespoons Dolomite Lime
1 Tablespoon Azomite
Pinch or 2 of Humic Acid
Sprinkle of Mykos

everything was placed on a scale to add by weight, obviously the bat guano must be a denser powder as it took less to reach desired weight. technically your guano may weigh more or less.