3-in-1 Aquarium Water Pump Filter Submersible Oxygen Internal Tank Flow Air Fish

3, Built-in aeration mouth, rotating black oxygen plug. type:Aquarium Filter. 1, 360 degree rotation, can increase the dissolved oxygen. 4, Pumping cycle, effort saving, plug and work. 2, Low water level design, a variety of display angles, suitable for low water level of the Turtle Filter.

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