The Neptune Systems COR 20 Return Pump is a high-performance, variable speed DC-driven centrifugal water pump designed specifically for saltwater aquariums. It serves as the vital core of your tank's circulation system, ensuring the continuous movement of water, which is essential for maintaining a healthy and stable reef environment.

This intelligent pump delivers an impressive 2000 GPH flow rate while being remarkably energy-efficient and quiet during operation. It features advanced controllability, functioning effectively as a standalone unit with its driver's button and LED interface. When connected to any Neptune Systems Apex controller via AquaBus, it unlocks its full suite of smart functionalities, becoming the most feature-rich pump on the market.

The COR 20 is ideal for reef aquarists seeking a powerful, reliable, and highly controllable return pump that prioritizes efficiency and quiet performance. Its seamless integration with the Apex system provides unparalleled monitoring and automation capabilities, making it a premium choice for those looking to build or upgrade a sophisticated, high-performing aquarium.