Pszemol wrote on 10/31/2006 3:46 PM:
Powerheads like quiet one 3000 give you more water
movement per watt of electricity than external pumps.

Yes, that's correct. Because of their design, they will
use less electricity. External motors don't use the
vibrator pump method, but are actual motors that continue
to move the shaft in the same direction until it gets into
the next position, and then the next electrical contact is
made, forcing it into the next position, and so on, and so
they use more electricity.

Wayne Sallee
Wayne's Pets