Patent ID: 9021988
Filing Date: 2015-05-05
Classification: A01K

Abstract:
1. An aquarium comprising: an aquarium tank having a top, a bottom and at least one side forming a space for holding water therein; a tube having a first end, a first diameter, and a second end, the first end disposed at a point proximate the bottom of the aquarium tank, the tube running inside the aquarium tank from the point proximate the bottom of the aquarium tank to a point proximate the top of the aquarium tank, wherein the tube runs through the at least one side and below the top of the aquarium tank, further wherein the second end of the tube opens downward at a location outside of the aquarium tank for draining water from the aquarium tank; and a constrictor disposed within the second end of the tube for regulating the flow of water through the second end of the tube, the constrictor having a second diameter smaller than the first diameter of the tube.