I am mixing up small amounts of potting soil (about 15gal. or 2 cubic feet) at a time. Its mostly peat moss and fine composted pine mulch, with about 1 pound of ground lime to bring up the PH. How much 10-10-10 fertilizer would you add 1 pound, 2 pounds, etc....? I know most people on this board are growing organic, and i try to when i can, but am using the 10-10-10 to keep cost down right now. Any help with this would be great.