Macerator - The Accessory that should be standard

Same as the three inch hose: black tank first, then gray water to help flush it out. My pump has a flush port on it, so if fresh water is available you can hook that up and flush it even more. Walk the hose from the pump to the drain so the water all runs into the drain, then coil it up and screw the ends together.

Never had a problem ....