The energy efficient, compact design, adjustable flow control, and submersible or external operation, provide the versatility that make the Marineland Submersible Utility Pumps the perfect choice for a wide range of uses including recirculating water inside and aquarium or a refugium, driving protein skimmers and sump filtration systems, or even creating waterfall effects. Marineland Maxi-Jet 4500 Submersible Utility Pump is versatile, quiet running, and energy efficient. With a maximum flow of 1240 gph, it comes complete with all the fittings you need to operate in-line externally, or in submerged applications. Maxi-Jet 4500 Submersible Utility Pumps carry a 3-year limited manufacturer warranty.