I used a superskimmer for about 2 months before I moved up to my big euroreef. Mine was an older used model though and didnt have that valve to control the pump outlet. I didnt have an ounce of trouble with mine though. I had to put my own airline hose on it and my own air valve on it since it didnt come with one though. I used some pretty wide air line hose (with no silencer) and was able to control the level of bubbles in the skimmer with the air valve. I could dwindle mine down to the point where bubbles stopped pouring out of the pump.