Powerhead (pump)

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An aquarium powerhead is a water pump completely submerged into an aquarium to circulate water.


An aquarium powerhead is typically used to create flow throughout the tank. For example, a single powerhead could be used at one end of a freshwater aquarium to simulate a laminar river current, or multiple powerheads can be positioned throughout the aquarium to create more turbulent flow.[citation needed]

A switching or variable-voltage system (also known as a "wavemaker") is commonly used in reef aquaria to more closely simulate the movement of ocean water.[1]

Water circulation is vital to proper biological filtration of most saltwater aquaria (particularly those using the Berlin Method), and is useful in freshwater aquaria for allowing free-swimming fish adequate exercise.[2]


  1. ^ "The Benefits of Putting a Wavemaker in Your Saltwater Aquariums".
  2. ^ "Aquarium Powerheads, onlineaquariumstore.com". Archived from the original on 2012-02-02. Retrieved 2012-01-23.