I don't know how long I sat there, herding excess calcium towards the kidneys, when I realized the calcium starting to clump in the high pressure nodules of the kidney. They didn't respond to my magic, rather they became dark dots where my magic couldn't see into. Nevertheless, I couldn't leave them there, so I threw coil after coil of magic tendril about it until I couldn't see the darkness, then shoved energy through till I felt the space vanish. When I pulled back, the budding kidney stone had vanished, and more calcium had started to come down from the head of the body. Gus had figured it out.