To get the pump quiet put a pad under it you can use a filter pad. I do not know how to start a siphone because I have a regular overflow, but before you do start it fill the sump with water just up to where you want the water level to be. Because once you do figure out how to start the siphon if the water level in the display tank will drop because the sump will be filling up, the siphon will break causing you to do this again.