Water filtration system and vessel

A gravity-flow filter system is provided having an upper and lower reservoir separated by a filter; an elongate tube places the filter in fluid communication with the lower reservoir and is selected to have a size such that the natural flow rate of the filter allows the tube to be completely flooded and yet has a flow rate equal to or greater than the average natural flow rate of the filter. The water flowing down the elongate tube into the lower reservoir creates a siphonic drawing force that increases the flow rate of the filter as well as the filter life.