Corner tank

A corner tank especially configured to fit the contour of a corner of a room produces the optical appearance of a tank of rectangularly solid shape while occupying only one-quarter of the volume. The tank has a horizontal cross sectional profile in the shape of a right isoceles triangle and includes a front vertical member of transparent material and two side vertical members having reflective surfaces facing the interior of the tank. With the side members located adjacent and parallel to the abutting walls of the corner of a room, the tank appears, to an observer looking through the front member, to possess substantially greater volume with the increased volume appearing to extend into the walls of the corner. Tank supporting structures and hoods of congruous configuration and operation can be employed with the corner tank.