Submersible Pumps & Powerheads
Submersible Aquarium Water Pumps and powerheads are operating while being completely submersed inside aquarium or sump filter. Rather than sucking water through an inlet tube like an external pump, most submersible pumps and powerheads do not have an inlet in which you can attach tubing or hose. They are used primarily to feed protein skimmers and reactors and to provide water movement within the tank.