The SPNOGE filter is crafted from high-quality, non-toxic ABS plastic, featuring a transparent design with a skeleton top cover that prevents fish from accidentally entering the filter. Key Benefits: - Effective Filtration: Equipped with biochemical filter cotton, this filter efficiently captures large debris while distinguishing biological filter balls swiftly. Its multi-layered filtration system accelerates the nitrification process, eliminates odors, and purifies water, creating a healthy environment for your fish. - Optimized Oxygenation: The built-in bubble stone works with an aquarium oxygen pump to significantly increase oxygen levels in the water, ensuring your fish have the necessary oxygen for optimal health. - Quiet Operation: Operating at less than 30 dB, the filter runs quietly, allowing you to enjoy the calming sound of flowing water without disturbing noise (note: air pump not included). Specifications: - Size Compatibility: Ideal for 1-20 gallon aquariums, measuring 7.5 x 7.5 x 11 cm (2.95 x 2.95 x 4.33 inches). - Weighted Base: The weighted design prevents the filter from floating, ensuring it remains securely at the bottom of the tank during operation. Use Scenarios: 1. Home Aquariums: Perfect for hobbyists looking to maintain a clean and healthy aquatic environment for small to medium-sized tanks. 2. Aquarium Startups: An excellent choice for beginners setting up their first aquarium, providing essential filtration and oxygenation support from day one. 3. Dedicated Fish Care: Ideal for those caring for delicate fish species that require stable water conditions and adequate oxygen levels. The SPNOGE filter combines functionality, compatibility, and performance, making it a reliable choice for any aquarium enthusiast.