I have the tunze wave box 6091 and when I saw my tank today It was not working. I have tried to disconect and reconnect all the wires but nothing has helped it. The lights go back and forth on the wave controller (like they should) but the pump only runs about one-two pulses every minute not in sync with the wave controler(on both the master and slave). I have also taken apart the pump nothing was clogging it. Without the wave controller hooked up the pump does run constant. It is only 6 months old. Any ideas THANKS