having just purchased a Co2 kit by Dupla, the sugar/water/yeast formula seems pretty much the same. One thing worth noting is the small submersible pump approx 1 inch sqaure that is pumping water from the tank across where the hose from the reactor comes into the tank, which does 2 things, creates a vacuum and also disperses the CO2 bubbles as they enter the tank.
Will take pics and post.