Today, I took my new 2.5lb CO2 canister down to San Leandro to an Airgas plant to have it filled. The guys there, who normally deal with companies and bulk production, were very nice to take my little tank into the factory and fill it up right away. When they brought it back to me, it was steaming and covered with frost. Coolness.

When I got home, I removed and cleaned the reactor, tossed the DIY yeast generator, and hooked the solenoid regulator to the pressurized canister. Now, I have a steady stream of CO2 injection, far more reliable and predictable than the DIY route. Within a day, I should see my ppm (hovering precariously at 4) shoot up considerably. Five through 15ppm is ideal. I'm shooting for 10. Yay!