Now that you have selected your Tank, Stand, Canopy, and Filter System its time to select the appropriate water pump to drive your system. There are a number of choices for pumps, the more common are Magnetic and Centrifugal.
Most pumps utilize a core and armature.
The armature, which rides on a shaft through the center of the core is comprised partly of a magnetic cylinder. The magnetic cylinder has opposing poles , positive and negative, on either side of the cylinder which are attracted and repelled by the magnetic field generated by the core windings. The end result is that the armature turns as it is effected by the positive - negative EMF created. The more common variety of pumps using this principle consist of Powerheads and Centrifugal pumps. Powerheads are pumps that are generally submersed within the water.