Aqua Sponge Aquarium Filter(Chemical Filtration for Fresh Water)

It is suitable for fish tank and fish pond filtration. Mainly used for physical filtration and biochemical filtration. Use collocation to achieve better effects: fish tank with cotton wool, fish pond with vine cotton. Warm Tips: Cleaning the foam each month to ensure the permeability and shape. It is normal to receive the foam that is little deformed, it will recover slowly after entering the water.