A powerhead is a submersible water pump generally used for water circulation within an aquarium or to power a protein skimmer.

Powerheads are available in a number of different sizes with flow rates as low as Litres per hour (LH).  You can select for Internal or External Type

Powerheads can also be used as return pumps from sumps, refugiums or wet/dry filter systems. Magnetic Drive is particular highly respected for their quality, dependability and power.