Power Sweep Rotating Powerheads from Zoo-Med Power Sweep powerheads from Zoo-Med have a number of attractive features in addition to being quite inexpensive and saltwater safe. They are aerating powerheads that automatically rotate 90 degrees, creating the "sweep". The water deflector can be adjusted a full 360 degrees so you control where the output flow is directed; you can also control the intensity of the flow and how much air is introduced. Power Sweep Powerheads should be fully submerged at all times.
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