Enhance the water quality and clarity of your aquarium with this high-performance Aquarium Filter, designed with eco-friendly sponge and non-toxic high-quality plastic to ensure safety for all fish. This advanced filter utilizes biochemical filtration technology to effectively remove impurities, adsorb harmful substances, and increase oxygen levels, promoting a healthy and stable aquatic environment for your tropical fish. Equipped with two fixed suction cups, it securely attaches to your tank, preventing accidental falls and ensuring continuous filtration. Key Features: · Eco-Friendly and Safe Materials: Made from non-toxic high-quality plastic and eco-friendly sponge, guaranteeing safety and harmlessness to all fish species. · Efficient Filtration System: Biochemical filtration enhances the removal of impurities, stabilizing water quality and maintaining a healthy habitat. · Oxygen Enrichment: Effectively adsorbs harmful substances while increasing oxygen levels in the aquarium water, supporting fish health. · Secure Installation: Comes with two fixed suction cups for fast and firm attachment to the aquarium wall, preventing the filter from falling off. · Versatile Compatibility: Suitable for water tanks and all small tropical fish tanks, accommodating various tank sizes with multiple model options available. Specifications: · Material: Plastic + Filter Cotton · Condition: 100% Brand New · Color: As shown in pictures · Models and Suitable Tank Sizes:  - XY-2880: Up to 80L  - XY-2881: Up to 100L  - XY-2882: Up to 200L  - XY-2883: Up to 250L  - XY-2885: Up to 350L · Weight Range: Approximately 168g to 439g (5.9oz to 15.5oz) Usage Instructions: · Designed to be used with an air pump rated above 2W (air pump not included). · Position the air pump above the aquarium to prevent backflow during power outages. · Soak the filter sponge in aquarium water for 5 minutes before initial use to promote nitrifying bacteria colony formation. · Rinse the sponge with aquarium water only; avoid using hot water to preserve beneficial bacteria. Package Includes: · 1 x Aquarium Filter (including filter cotton) · 2 x Suction Cups This Aquarium Filter offers an effective and safe filtration solution to maintain crystal-clear water and a healthy environment for your aquatic pets. Its durable, non-toxic construction combined with efficient biochemical filtration makes it an essential accessory for any small tropical fish tank.