There are a lot of different ways that people have introduced the CO2 to the reactor. Including the ceramic diffusers. One thing off the top of my head that makes me think they'd be less than ideal is that they like to clog, meaning more maintenance. I personally started out using a Mag pump with a fractionating impeller for a skimmer thinking it would break up the CO2 bubbles before they got to the reaction chamber. I then changed out that impeller with the normal pressure impeller and didn't see any difference in efficiency as far as bubble leakage into the tank. I'm not saying that some form of turbulence before the chamber is irrelevant, just that my and others experience have not seen it proven out in use. There is a lot of turbulence at the tip of the CO2 line at the point of injection.