Used Tunze Auto Top Off System 5017. Includes whole set up. Also includes magnetic holder fof pump to hold upright in your container which i purchased separately. the small plastic piece that fits into pump intake is cracked. Could be superglued if you felt the need. Needs a little clean up but worked great. I decided to do a float directly to my sump for ro water and have completely bypassed the ato do i dont need any more. Could use a cleaning.