Be confident in your purchase we're an Authorized Coral RX Dealer. How cool is that?!?!? Features: Adjust the pump?s flow levels with the included controller. DC pump uses significantly less energy than comparably sized AC pumps. Safe for use in both freshwater and saltwater tanks. Only suitable for submersible use. Great customer service and a 3-year warranty ensure long-term satisfaction. One of the most important parts of a thriving aquarium is its pump ? and the Simplicity 1000 DC Aquarium Water Pump has your needs covered. Your finned friends will enjoy a healthy, clean environment thanks to this efficient pump with adjustable flow levels. Submersible in both saltwater and freshwater tanks (sold separately), this pump is backed by Simplicity?s top-notch customer support and a 3-year warranty.