【Keep the water clear and clean】 Cotton Biochemical cotton, culture of nitrifying bacteria, multi-layer design, with a large surface area to filter impurities. Make the water quality clearer. 【Multi-layer design】Multiple filtering, the bottom of the filter is a layer of biochemical sponge, the backing is made of air stone, and then covered with a funnel outlet, for better filtering effect.< /p> 【High Quality】Our biochemical sponge filter is made from high quality plastic, which is strong and durable. 【With suction cup】 Powerful suction cup, durable and beautiful, easy to clean and install. 【Note】Aquarium filters need to be matched with an oxygen pump. Size: Height: approx. 9.8cm / 3.9in, width: approx. 3cm / 1.2in.
