Featuring a powerful pump, this small hang-on filter delivers an impressive flow rate of up to 66GPH, making it suitable for 2-8gallon fish tanks. High-density biochemical cotton fillings offer better breathability and less flow-resistance compared to regular sponge filters, which efficiently filter fish waste and food debris, maintaining excellent water quality. Moreover, simply rotate the water flow adjusting knob, you can easily cater to the specific needs of your different fish species. With its quiet and efficient performance, this hanging filter ensures a clean and peaceful environment for your lovely fishes. Quiet & Efficient Filtration: Our small hang on aquarium filter adopts powerful pump, achieving up to 66GPH efficient waterfall water flow for 2-8gallons fish tank. Shock-absorbing fixed knob under the filter can effectively keep it stable and quiet, won’t disturb you sleeping, working or reading. Create a fresh, clean and quiet living environment for your lovely fishes. Reusable Filter Filling: Compared to normal sponge filters, our hang-on filter is equipped with premium high-density biochemical cotton fillings which has better breathability and less flow-resistance, deliver high-efficiency filtering of fish poop and food debris. Moreover, the biochemical cotton is conducive to the cultivation of nitrifying bacteria, which can improve water freshness and promote the survival rate of fishes. Adjustable Water Flow: You can simply rotate the water flow adjusting knob to increase or decrease the water flow according to different species of fishes. Waterfall flow design is beneficial for promoting the additional oxygen content in the filtered water, making the fish stay active and energetic. Anti-Suction Pipe: The bottom water pipe is designed with high density holes as extra filtration insurance, ensuring that small fishes and debris won’t accidently get sucked into the hang-on filter. Keep your attractive fishes safe and promote the survival rate of junior fishes. Easy Installation: No tools needed, just easily connect all the pipes and insert into the hanging filter. You can firmly hang this aquarium filter on most saltwater and freshwater fish tank with no more than 0.59in wall thickness. Notice that you need to filling in the filter with water when the first use or reuse after power off. Product Type: Hang-On Aquarium Filter Material: ABS, Biochemical Cotton Filling Color: Transparent Voltage: 110V 60Hz Power: 3W Power Supply: US Plug Maximum Water Flow: 250L/H; 66GPH Suitable Fish Tank Capacity: 2-8Gallons Power Cord Length: 105cm/41.33in Assembled Item Size: 8x9.5x20cm/3.15x3.74x7.87in Assembled Item Weight: 200g/0.44lbs Package Size: 12*11*9cm/4.72x4.33x3.54in Package Weight: 246g/0.54lbs 1x Aquarium Filter 1x Filter Cover 1x C-Shaped Connected Water Pipe 1x Short Transparent Water Pipe 1x Filtering Water Pipe 1x Shock-Absorbing Knob 1x User Manual