An improved water return system for water reservoirs such as aquariums and
ponds that provides a return of filtered water through a series of holes
rather than a curved weir or spillway. The use of the holes provides for
high oxygenation of the water prior to its return to the water reservoir
to the benefit of life in the water reservoir. Further, the use of the
holes provides reduced noise upon the return of the water because of the
surface tensions attracting adjacent streams to each other. Also,
placement of the holes provides a damming effect for the filter media
that can become a site for the cultivation of beneficial bacteria that
are necessary to remove ammonia and nitrites from the water by
positioning the media mostly out of water, thereby allowing necessary
oxygen to be freely available to grow bacteria.