In theory, you buy fina pellet cartidges and an aroma kit. Finaplix-H is what it's called I beleive. Cattle implants. Comforting huh?
Who cares, it'll make me feel good for a few months. What's cancer and some toxins floating around in your blood, huh? No biggie.
Actually I guess with your own filtering and heating, you can be a little more sure of the sterilization and purity, etc..