Baby bottle at Drug Store, 2.5" diameterskids said:Nice reactor could you post a larger macro picture? , don't be too surprised the CO2 is well diffused when at that high of a concentration, the movement of small molecules at 78F in fluid is something like 1000 ft/sec. It's faster from a point source since it's aided by not just browninan motion but also diffusion aided by a concentration gradient and it's very small average diameter of about 0.4 to 0.5 nm.
Masking tape to draw drilling points.
Clean drilled edges
Drill small hole for CO2 hose coupling
Seal with hot glue gun
Cut some plastic plate to seal the bottle cup
Fill up with sand
Almost invisible reactor in action
Close up of CO2 reservoir in contact with water
This simple reactor is maintenance free and fully automatic.