GIZGA JP-043F Multifunction ABS Aquarium Internal Filter Fish Tank 160 GPH 220-240V 7W Pump Multifunctional Aquarium Internal Filter Maximum Water Flow Rate:160 GPH (600L/h) This is the most common application. The installation is very simple for this plug-and-play filter. Just attach the spray bar to the filter body, place the filter body under water then it will work. This filter saves your maintenance cost by not requiring replacement cartridge. For routine cleaning, just take out the black bio-sponge and wash it with aquarium water every a couple days to two weeks, depending on the load of your tank. This bio-sponge conducts both mechanical and biological filtration. So the longer you use it, the better.