I work third shift. When I got home this morning everything was good. Filter running smooth etc... well I just woke up and the filter wasn't running. Unplugged it and plugged it back up. Nothing. Just wondering if neone might have ne ideas as to what happened. Its an aqua clear 500 on my 30 gallon. Good thing I had an extra one but my back up is loud so I don't really want to run it to long since its in the living room and annoying.