sera X-Edge 450 is a modern and powerful corner filter. The filter is very easy to integrate optically into the aquarium. Mechanical filtration is achieved by a filter mat as well as a carbon filled filter sponge that effectively prefilter dirt particles. They protect the biological filter media against dirt and increase the biological efficacy of the sera X-Edge 450 by doing so. The filter basket is already filled with the biological high performance filter medium sera siporax mini Professional for reliable biological filtration.The water flow rate of the sera X-Edge 450 corner filter is steplessly adjustable and can also be directed variably due to the included spray bar. Alternatively, the duck beak nozzle allows to create a soft current. This nozzle also allows to increase oxygen supply: air, which is then mixed with the water and transported into the aquarium, can be drawn in via the injector by means of the included air set.As with all filters by sera, the safety aspect was of