euroreef rs80 problems

[lorenz0]

so i am on my last legs with this skimmer. it worked great up until i moved the tank and now it will work for 2 weeks and than stop producing bubbles.

i would take it apart, put it all back together and it will for for another 2 weeks and the same thing. i'm on my last legs with this and am debating about selling it for pennies and buying a vertex 80 to replace it. If anyone has any ideas that would be awesome. i prefer doing a quick fix over a new skimmer esspecially since i rarely see the tank

oh and the venturi is pulling in air, but nothing at the neck of the skimmer