For a clear view in the aquarium, there is now this aquarium external filter, which uses the latest filter technology to tackle the dirt in the water. Its four-stage filter system consisting of three individually removable filter baskets is hidden inside the water purifier. Each basket can be filled with different filter materials, such as bio balls, ceramic rings or filter floss, to remove very different components and particle sizes from the water flowing through. An additional pre-filter basket collects coarse components from the water and thus prevents the clogging of the filters. The product has enough power to maintain the water quality even in larger aquariums. The pump can lift the filtered water, making it easy to place the external filter on the floor next to, behind, or in a cabinet under the aquarium. The inlet and outlet hoses also contribute to the relatively open choice of location. An innovative quick-release system makes it possible to disconnect the supply and discharge lines from the device in just two simple steps without having to disassemble the filter system completely. This makes it practically a breeze to maintain or change the filters in the device. In addition, you do not have to take apart half the aquarium landscape every time you clean the filter, as with an internal filter. The removal or supply of the aquarium water is done via an easy-to-use pipe plug system, which is inconspicuously placed with suction cups on the aquarium wall under the lid or in the corner. A protective basket on the water intake pipe of the product prevents aquarium inhabitants from being pulled involuntarily into the filter system.