Features： 1、Tri Color Bacteriological Filter Media: This aquarium filter media features tri color bacteriological media that effectively filter water quality and improve the environment in your aquarium. 2、Extra Filter Pads Included: Comes with two black filter pads to enhance the filtration effect, resulting in cleaner and fresher water. 3、 Materials: Made of aluminum oxide, these filters are long lasting and reliable, ensuring safe and worry free use in the long term. 4、Easy to Clean and Maintain: This well thought out design is easy to clean and maintain, making it suitable for various types of fish tanks and aquariums. 5、 Filtration Effect: Provides a superior filtration effect, helping support the growth of fish and maintain ecological balance in your aquarium. Specification： Item Type: Fish Tank Filter Media Material: Aluminum Oxide Package List： 1 x Bag of Filtration Media (150g) 2 x Filter Cotton