Neptune Systems COR15 Pump - Intelligent DC Return PumpPower your reef with the COR15, Neptune's intelligent DC return pump with wireless Apex control and exceptional efficiency!Professional Features: Powerful flow up to 3,960 GPH with adjustable output Wireless Apex control for precise flow adjustment Ultra-quiet DC motor operation Energy-efficient design reduces electricity costs Feed mode and custom schedules via Apex Trusted Neptune reliability and build quality Specifications: Up to 3,960 GPH | Wireless Apex control | DC motorBest For: Medium to large reef systems, sumps, automated flow controlExperience the difference of a truly intelligent return pump! The COR15 integrates seamlessly with your Apex system, letting you dial in perfect flow rates, create feeding modes, and monitor performance - all from your smartphone. Silent, powerful, and smart!