skimmer problems

Hello, I am new to the saltwater setup and my skimmer is filling the bowl with water even turning the valves down or up doesn't prevent it from doing it. when I put the airline in the water it stops bubbling up and filling. I tested the skimmer just yesterday and it worked fine. All I did was...

as the title says, is anyone running a vision 260 with a skimmer. Having trouble getting the skimmers to work due to the water level....