Aquarium tank filter integrated bio-filtration, oxygenation, and physical filtration to help small fish or shrimp to live a happy & healthy life. Key Features: • Included: ◦ 1x Retractable Outlet Pipe with Air Tube Connection, ◦ 1x Double Sponge Filter with Media Container, ◦ 1x Ceramic Pearls, ◦ 2x Suction Cup, ◦ 2x Sponge Replacement (In ceramic pearls container), ◦ 1x User Manual • Multi-filtration functions: This double-sponge fish tank water filter integrated bio-filtration, oxygenation, and physical filtration in one place. It also makes small water flow which can ensure the excellence of the water quality. • More efficient and durable: The hygger fish tank filter with double sponges means more surface area for beneficial bacteria filtering the aquarium water crystal clear. It can also remove the peculiar smell. • Super quiet and more delicate bubbles: Hidden outlet design; Lower noise; More delicate bubbles. • Sponge Dimension: 2.4"Dx4.9" H • Inner Hole Diameter of Sponge: 0.39" • Applicable: 15-55 Gal • Applicable Air Pump: 4 W • Air Tube: 4 mm (0.16 Inch) • Pipe Length: 6.1"~9.25" • Capacity: 200ml • Weight of ceramic media ball(0.8-1cm): 0.25 lbs • Colour: Black • Material: Plastic, Soft Sponge • Made in: China • Dimensions (HxWxD): 15.5x23x5 cm • Weight: 0.3 kg • Manufacturer's Warranty: 1-year Warranty.