Vktech&reg; 220v Power Aquarium Fish Tank Hang On Slim Filter Waterfall Water Circulation Low Power Consumption Transparent Out-hang Style PC Filter can make up the disadvantage of no adjustment about traditional filter With water volume button design, you can adjust water volume according to actual situation. The water absorption tube is creative and reasonable to filter dirt without absorbing small fish With a firmed rotator on the bottom, it break the defect that traditional filter cannot meet different thickness fishbowl Freeze noise to enjoy quiet moment, Ultra low power consumption, low radiation to keep ecological balance, Excellent filter effect, making sure transparent and clear water Energy-saving and environmental-friendly, Flow 120liter per hour, suitable for any aquarium below 12 liter in volume, Water volume adjustment function