Description: 【Enhanced Filtration】: This mini fish tank aerodynamic filter has a strong filtration capacity, keeping the water clear for a long time and reducing the need for frequent water changes. 【Compact and Space Saving】: Aquarium Filter is made from PP ceramic material, delicate mini size, it does not take up much space and is suitable for all types of small fish tanks. 【Circulation】: The flow from the oxygen pump comes out of the small holes at the bottom. Due to the slender pipe of the filter, bubbles swarm upwards in the pipe, creating a thrust on the water inside, causing it to circulate. 【Effective Filtering】:Fish Tank Filter inlet of the water flow is in the middle of bio filter cotton. After passing through this cotton, there is an internal physical filtering effect where feed, paper scraps etc., in your fish tank are retained by this filter cotton. 【Easy to Use】: This aquarium filter simply connect this product with an air pump using an air tube and plug in electric supply to start (water or bubbles coming out from outlet indicates normal). Specification: Material: PP Ceramic Size Chart: 4.5cmx3.9cmx11.1cm/1.77inchx1.54inchx4.37inch Package Includes: 1 Fish Tank Filter Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.