Information about AQQA Hang-On-Back Aquarium Filter:Experience effortless aquarium maintenance with the AQQA Hang-On-Back filter. It offers simple plug-and-play operation, customizable flow, and powerful triple-stage filtration for a pristine tank.Plug-and-Play DesignThe AQQA aquarium filter is designed for ultimate ease of use. Unlike many traditional filters that require water to be added before starting, our fish tank filter can be powered on directly—no need to fill with water! Simply plug it in, and the filter will start working immediately, making setup quick and hassle-free. (Note: When in use, the water pump should be below the water surface.)Customizable Water FlowOur filter for fish tanks features an adjustable flow control system. This allows you to effortlessly fine-tune the water flow to match your tank’s inhabitants’ needs. Whether you have delicate fish that prefer calm waters or species that thrive in stronger currents, our aquarium filter offers the flexibility to create the perfect environment.Mechanical Bio Filter PowerOur fish tank filter provides superior filtration to maintain a pristine and healthy aquarium environment. Its innovative design features triple bio sponges containing activated carbon. This ensures both mechanical and biological filtration. This allows the filter to effectively trap debris and waste, helping to keep the water clean and clear.Silent, Peaceful for AquariumsOne of the standout features of our fish filters for aquariums is its ultra-quiet operation. Designed with advanced noise reduction technology, this small aquarium filter runs at a barely audible level. This makes it perfect for bedrooms, offices, or any space where noise is a concern. With noise levels kept below 30 dB, you can enjoy a peaceful environment without disturbing your aquatic pets or your household.Space-Saving & Ultra-ThinThis silent fish tank filter is compact, efficient, and ultra-thin. It is designed to save valuable space in your aquarium setup. Its Hang-On-Back (HOB) installation method offers a convenient solution for tanks ranging from 20 to 30 gallons. The sleek design blends seamlessly with your tank’s appearance, delivering high performance without being intrusive. 3PC Dual Bio SpongesHigh-efficiency filtration Fish-Safe Sponge FilterTo prevent fish suction Flow Control ValveAdjustable flow Glass ThicknessSuitable for fish tanks within 1.2 inch