[colechristensen]

Are they actually CO2 concentrators or some variation of buying dry ice or compressed gas and injecting it?

[lostlogin]

I did it by running gas off fermentation (sugar and water) and it worked amazingly well.

I’d have to refuel about once a week.

Doing via CO2 bottle is the way I’d do it now and is how the impressive displays do it (for the ones I’ve seen).