I have not found a definitive answer to this yet but maybe someone will know. I am considering giving CO2 a try. I also happen to have a good friend in the gas supply business.

I can get the CO2, tank and regulator from him for next to nothing. Logically I cant imagine there being any real differences in the regulators themselves other that the components that come after the regulator.

If this is true would I only be looking to add a solenoid, bubble counter, and diffuser to put this together? At least from a hardware standpoint...