The Nautilus DC Return Pump is a highly efficient and controllable solution for powering your saltwater aquarium's circulation. This DC-powered pump is engineered for whisper-silent operation, featuring a slow start function to prevent splashing and reduce stress on your plumbing. It serves as the heart of your filtration system, reliably moving water from your sump back into the main display tank with precision and stability, ensuring optimal water quality and clarity for your reef inhabitants.

This pump offers exceptional control with 10 distinct output settings, allowing you to dial in the perfect flow rate for your system's needs, adjustable down to just 10% of its maximum power. The 900 GPH model provides a maximum flow of 900 gallons per hour with a 10-foot max head height, all while consuming a mere 27.5 watts. It includes built-in feed timers for 10, 30, or 50-minute intervals and is fully compatible with popular aquarium controllers like the Neptune Apex and Coralvue Hydros via a 0-10v analog input. For flexible installation, it comes with 1-inch and 3/4-inch hose barbs and can be easily hard-plumbed using its 32mm/1-inch threaded outlet.

The Nautilus DC 900 is ideal for the discerning aquarist with a medium to large reef system who demands reliability, silence, and advanced control. Its energy efficiency helps reduce long-term operating costs, while the precise flow adjustment is perfect for fine-tuning water movement through reactors, chillers, or UV sterilizers. Hobbyists who have or are planning to build an automated system will particularly appreciate its seamless integration with third-party controllers, making it a smart, future-proof choice for a sophisticated reef aquarium.