The reactor looks like it would be fine for a mist setup. It's just one of there air bubble generators hooked up to a CO2 line.
What I am worried about is the CO2 tank hook up. I can't seem to find what type of bottle, besides the NRG ones, that you can hook up to it. The NRG bottles would only last me 5 to 10 days on my 75 gallon tank.
Look at the graph for usage. That graph is based on 10 PPM CO2.