Feature: 1. EXTENSION PIPE: Aquarium filter with encrypted filter port at the bottom, extra long extension pipe can better clean the bottom of the tank, suitable for many kinds of fish tanks, prevent small fish and shrimp from being inhaled. 2. SURFACE SKIMMER: Fish tank external hanging filter with unique surface oil remover, can effectively remove the oil film and scum on the water surface, no need to worry about how to remove the oil film. 3. FILTER PLATE: Aquarium hanging filter with activated carbon biochemical filter plate, made of microporous filter cotton and activated carbon particles, helps to continuously remove odor and excrement. 4. ADJUSTABLE DESIGN: Fish tank filter adjustable flow, different kinds of fish need different strength of water flow, just dial the adjustment valve can easily choose the correct water flow. 5. INCREASE OXYGEN: Adjustable aquarium filter is designed with waterfall, small waterfall can also produce more oxygen to increase the oxygen content of fish tank water, no need to put additional oxygen pump. Specification: Item Type: Aquarium Hanging Filter Material: PVC, Activated Carbon Use: Fish Tank External Hanging Filter Power: 4W Flow Rate: 400L/H Recommended Fish Tank Size: Within 50CM/19.7in. Package List: 1 x Filter Body1 x Instruction Manual1 x Oil Removal Membrane Filter Head1 x Flower Basket Pipe1 x Three Way Water Pipe1 x Right Angle Pipe1 x Connecting Pipe1 x Connecting Head1 x Extended Inlet Pipe1 x Control Valve1 x Fixing Ring2 x Filter Plate