venturi skimmer question

[lilygardn]

I am not really new to the hobby, but I am new to skimmers. I finally got one, and I have a question. The little air tube that they tell you to add to the powerhead to make the bubbles in the skimmer tube only blows out water for me. What am I doing wrong?

I have hooked it up like they show it.

Any ideas???

 

[scrmbld33]

what type of skimmer? it sounds like the pump is backwards or something the venturi should be on the intake side, the only way i see it blowing water out is if its on the out take side