【4-stage Efficient Filtration】W/ filter sponge and activated carbon filter plate, can make the cloudy aquatic tank clean and clear. Reduce your tank maintenance，save time and effort. (Can't kill green a-lgae.)
【Efficient Surface Skimmer】It can automatically adjust the height to clean the surface oil scum.(Note: water level must be higher than the fixed pipe outlet of the surface skimmer.)
【Quiet 40dB & Adjustable Flow】You can adjust the top knob to set a gentle flow to make it comfy for delicate fish or shrimp. Machine noise <40 dB (About 1 minute of noise may occur during pumping.)
【Adjustable Water Flow】 You can adjust the water volume according to the needs of the fish water or fish tank
【Double Waterfall Design】 this design increases the contact between the water and the air, thereby achieving an oxygen-enhancing effect
