TopOne Aquarium Filter External Hanging Thin Fish Tank Filter Waterfall Submersible Oxygen Aquarium Filter Pump

--High-performance biochemical cotton filtration.High efficiency and energy saving, easy to clean.

--The new three-in-one design of oxygen injection, diving and air extraction,suitable for freshwater and saltwater

--The new flow adjustment function design prevents juveniles from being sucked into the tube,protect every animal that lives in the aquarium

--Hanging outside of the aquarium, won't take up the aquarium space, giving fish more space to play

--It can aerate and promote water circulation