【Three layers of filtration】The bottom of the aquarium air filter is a layer of biochemical sponge to prevent small fish from being sucked into the filter. The medium is moss stone and the top is the funnel outlet. It can increase the oxygen content in the fish tank and improve the survival rate. 【Suction cup design】The air pump sponge filter has its own suction cup, which has strong suction and can be installed in any position of the aquarium glass. To avoid uneven mixing of water and air, do not use an oversized air pump. [HIGH QUALITY HYGIENE] Our sponge filter horns are made of high quality plastic and sponge, which are sturdy and durable. Sponges are harmless to all fish and are not harmful to the environment. 【Keep the water clear】The mini aquarium filter cultivates nitrifying bacteria to make the water clearer. Micro filter aquariums are suitable for small aquariums, shrimp aquariums and round aquariums. 2 aquarium filter sponges, 2 filter pumps, aquarium hose (1m), biological
