A plant supporting aquarium filter device supports and incorporates a plant into filtering of water within an aquarium. The device includes a perimeter wall defining a cylinder surrounding an interior space. A tube is insertable into the cylinder. A tray is coupled to the tube and positionable in the interior space supporting the tube within the cylinder such that a bottom end of the tube is positioned in spaced relationship to a bottom of the cylinder, The tray divides the interior space into a top section in fluid communication with a bottom section. A hose injects air into the tube inducing fluid flow through the cylinder. A plant supporting material is positioned on the tray for filtering fluid drawn through the interior space into the tube.