Enhanced Aquarium Filtration Cube Water Flow for Better Filtration: The hollow cube design promotes circulation of water through filtration media, resulting in cleaner and healthier aquarium water. Durable Polypropylene Build: Made from quality polypropylene, this cube is resistant to water damage and chemical corrosion, ensuring reliable longterm performance in aquatic environments. Flexible Media Compatibility: Can hold a wide range of filtration media such as activated carbon, ceramic rings, bioballs, and other common aquarium filter materials, making it versatile for different filtration needs. Compact and Practical Size: Measuring 4.65 x 4.65 x 4.37 inches, it fits most aquarium filter systems while offering ample storage space for media arrangement. Ideal for use in: 1. Freshwater aquariums where maintaining crystalclear water is essential for fish health. 2. Marine aquariums that require efficient filtration to handle higher biological loads. 3. Pond or terrarium filtration systems needing organized and effective media placement. This filtration cube helps improve water quality by maximizing efficiency, protecting aquatic life, and extending the life of your filtration media, all within a durable and easytouse design.