Dymax Slim Flo is an external hang filter designed to be clipped on any side of the aquarium. Unlike the conventional internal power head filter. This hang filter does not take up space in the aquarium. Beside, the cascading effect provide a high levels of aerobic filtration and increase oxygen levels for fish, coral, plants an other living organism in the aquarium. Dymax Slim Flo filter is equipped with an extendable intake pipe to get strainer, nearer to the bottom of the aquarium and adjustable flow control knob for reducing filtration during feeding time.