Designed for tanks 75-125 gal;No water by-pass; Water is forced through the media baskets, thanks to it's flush design;Includes ball-valve connections for simple flow adjustments and easy flow shut off and removal for filter maintenance;No noise or vibration;Filter circulation: 260 GPH; Pump output: 320 GPH; Max head: 4.59 ft. Power consumption: 34W; Filter volume: 10.3 qtr.