Dumb question: Does the hobby use the terms pump and powerhead interchangeably?
Back when I did this a long time ago, a pump had an inlet and outlet port, and could be submerged or not.
A powerhead was kind of a "fan", if you will, that attached to the glass to move water within the tank -- but could not possibly be used to return water from the sump to the tank (for instance).
Back when I did this a long time ago, a pump had an inlet and outlet port, and could be submerged or not.
A powerhead was kind of a "fan", if you will, that attached to the glass to move water within the tank -- but could not possibly be used to return water from the sump to the tank (for instance).