Thanks Rusty & Stinky for sharing your experiences with me. I'll just keep adding the castings to my soil mix, and see what I can do about finding some in liquid form. I remember seeing some liquid castings at a store somewhere, it was packaged in a 2-liter soda bottle, and I'm kicking myself in the ass for not getting it when I saw it. Now I have no earthly clue where to find it again w/out having to order online.

Thanks again for your responses XCrispi, Rusty, & Stinky! You've all been a great help.