So my tunze 9011 stopped working about 6 weeks ago. It was originally purchased in February 2012. It was working fine, then all of a sudden stopped. I took it apart and cleaned it, still would not work. The dealer asked me to send him pictures of the impeller/motor, I did, there is no physical damage to either, then he sent a new impeller (which took 4 weeks), it still will not work. He seems reluctant to send out a replacement, is there any other way to do this? The unit is still under warranty and I just do not have the cash to buy another. It just seems to be taking a long time to see any results. I am concerned about my reef inhabitants. I lost a big blonde naso tang shortly after the skimmer stopped and I really don't want to lose anymore.