Mini Aquarium Sponge Filter, Fish Tank Filter, Small Fish Tank Internal Filter with Sponge and Air Stone, High-Density Biochemical Cotton Filter, for Small Fish Tank , Aquarium(Air Pumps Not Included)

Multiple filtration systems: Adopting environmentally friendly high-density biochemical cotton and small particle filter stone as filtering materials, it is Powerful cleaning, can quickly adsorb dirt, solve the problem of fish faeces and Unpleasant smell in water.
Improvement of water quality: The air pump-driven filter also increases the solubility of oxygen in the water, and the fresh air produced by the bubble column will bring clean water to the fish and create a favourable growing environment.
Easy to install: Simply connect the air hose to the air pump, place the filter into the aquarium and turn on the air pump.
Scope of use: Mini aquarium filter with mini size and practical design is suitable for small aquariums without occupying space.