The Elevated Vortex drinking fountain for medium and large dogs is our newest member to the Pioneer Pet drinking fountain line. This fountain creates a “vortex” that pulls down any hair or debris from the bowl.It also adds oxygen into the water. You will be amazed how clean your pets drinking water is! FEATURES AND BENEFITS *BPA free *128 oz *Auto pump shutoff (#3078) when water level is too low *Charcoal filtered *Replacement filter: #142154 – 3 Pack Round Filters *Replacement pump: #3078 Auto Shut-Off Pump *USB and traditional wall connector