Ok
1.) As far as I could tell there was air coming out of it
2.) I hooked it up to the tubeing, (And a bubble stone) but no air came out. I checked and made sure that it wasn't some thing in the air line, and I blowed it and stuck it in the water, and bubbles came out of it. (Very fun!!! :P )
3.) There is no ajustment switch on the out side any where, and the screws holding the lid in place were so rusted that it striped the screw just trying to get the screw driver in! It may sound like a brand new aeriator.

:
~Hannah