It is a 3 in 1 compact water pumping, water circulation, and water filtering structure that has simple assembly and easy operation. It contains a multilayer biochemical filter system, which combines the latest decomposing technology of physics and biology. The filter is suitable for cultivating good nitrobacteria, improving filter effect, and keeping the water crystal clear. The stream can be adjusted at will to wave the water surface. That helps to release the carbon dioxide from the water and to dissolve the oxygen into the water for the aquatic animals. The pump motor is highly efficient, energy-saving with low noise.