I recently got a vertex omega 130 for my Red Sea Reefer 170 and from day 1 I couldn't get the skimmer to work properly and stop overflowing. I realized that the skimmer needed time to break in and so after I had given it a good rinse out, I left It running for over a week, but even after a week it still overflowed. I then tried a vinegar bath, restricting air, an extremely thorough clean and even raising the skimmer from its original depth of 8 inches. Bear in mind that the gate valve has been fully open the whole time. Still no success. All of this time I had been running lots of carbon in my tank because I know how some chemicals can make a skimmer behave. Anyway, I emailed vertex to explain my situation and a week later and still no reply...I have now given up on vertex and will be getting a reef octopus instead, a brand I have used before and was very happy with.