As part of your regular aquarium maintenance, you will need to clean the tank and all of its equipment, which includes the fish tank filter pump. The aquarium filter pump will have both mechanical and biological filter media which need to be cleaned to function. However, you need to be careful when cleaning the aquarium filter, as there are various useful microorganisms that contribute to your tank’s environment and your fish’s well-being. In order to properly clean your aquarium filter and pump, you’ll need to be very careful, even with an external aquarium filter. You need to take out the aquarium filter’s cable cord so that you don’t damage the motor of the pump by letting the impeller run without adding water. During the partial water change, leave one or two buckets of the water you extracted from the tank  When disassembling your aquarium filter, pay close attention to the order of the filter media and sponges Clean the filter media and sponges carefully in the water you extracted from the aquarium Clean the dirt from the filter media by rinsing them several times with the extracted water and squeezing them out and wait for the coarse filter sludge to dissolve After that, you can move into the pump. Be careful with the filter pump and its small parts that can get damaged easily during cleaning. Loosen the kind of magnet which holds the rotor in the housing Then remove the coarse dirt from the rotor with a toothbrush and paper. The inner wall of the pump in which the rotor or impeller is mounted should be cleaned with an aquarium tube brush