Fish Tank Filter Aquarium External Filter Waterfall Suspension Oxygen Pump Submersible Hanging Fliter

3 in 1 design, it can be used as a filter, a oxygenation pump and can be used for water circulation.|High efficient and energy-saving, perfect to help improve water quality so as to keep your aquarium in optimum condition.|Waterfall water flowing design, ultra quiet working.|For the first time use, you need add full of water then it can work.|For type 2/3/4/5/6, it is with oil removing membrane processor, which can adsorb redundant oil from the surface of water.