I have the largest CO2 Atomizer Diffusor from GLA and I have to say it impressed me (no easy accomplishment) after having used a wide variety of reactors and diffusors over the years. It is, hands down the best one I've had yet (now almost 10 years into the hobby).
i have the GLA Primo regulator and inline atomic diffusor, took me few day to figure out the flow(mainly cuz of leak i didnt notice right away) and now im runnin around 3bps 50psi. im very happy with it!!!
cool is the atomic regulator v3considered a dual stage or single stage?
I'm not sure, but I wouldn't get bogged down with that detail. It won't allow end-of-tank dumps from what I know, and that's all that matters (with respect to single/dual stage anyway). If you really need details, ask Orlando by emailing GLA directly.