Got a Rena Filstar Xp4 a couple months ago started out working fine started moving less and less water over a few weeks until it finally stopped moving water altogether changed media regularly over this time so Im sure it wasnt plugged up. I prime it as directed in the manual, I can hear the motor running but no water moves. For every possible problem the website and manual says "improperly primed" (user error how convienent for them). I have primed it taken it apart cleaned it over and over following the instructions to the letter. Anyone have any ideas? Dont even want to attempt it too many more times if its not going to work as my floor gets covered with water everytime, huge mess!!