1、Practical to Use: Aquarium internal filter is anti fouling, reduce the number of times the fish tank needs to replace the water, and can add oxygen to the fish tank. 2、Biochemical Cotton: Aquarium filter's internal adopts premium filter biochemical cotton, which can reduce the odor and yellow water in the fish tank, decompose feces and feed residue, etc. 3、Water Circulation: Aquarium filter has strong power, the waves become bigger, increase the water surface fluidity, insert oxygen tube can supply oxygen, make the whole fish tank form water circulation. 4、High Efficiency Filtration: Aquarium submersible water filter pump adopts filtration, circulation and oxygenation in one, high efficiency filtration, fresh seawater is applicable. 5、Premium Material: The internal aquarium filter pump is made of premium plastic, strong and durable, safe and non toxic, long service life. Item Type: Aquarium Filter Material: Plastic Use: Fish Tank Oxygenation Filter 1 x Filter Pump 3 x Suction Cup 1 x Fixing Buckle 1 x Hose 1 x Fitting