Overview

The Neptune Systems COR-20 is one of the smartest and quietest return pumps available for saltwater aquariums. Whether you own an Apex Controller or not, the COR-20 is ready to deliver exceptional performance. It can operate as a standalone pump with its included controller, or integrate seamlessly with any Apex system for advanced programming, monitoring, and automation through Apex Fusion Cloud Software.

With up to 2000 GPH of flow, ultra-quiet operation, and built-in safety features like temperature monitoring, the COR-20 offers efficiency, reliability, and peace of mind for reef hobbyists of all levels.

Key Features

• Standalone or Apex-Ready – Operates independently or connects to any Apex controller via AquaBus for advanced features.

• High Flow Capacity – Pushes up to 2000 GPH with a max head height of 20 feet.

• IQ-Level Technology – Set custom minimum and maximum flow rates for precision control.

• Ultra-Quiet Operation – Vector Control BLDC motor technology ensures whisper-quiet, vibration-free performance.

• Energy Efficient – Consumes less than 90W at maximum power and under 50W at typical full output.

• Smart Monitoring – Provides real-time feedback on pump status, wattage draw, flow rate, and internal temperature.

• Safety Built-In – Automatically slows down if overheating occurs, protecting both the pump and your aquarium.

• Flexible Plumbing Options – Includes multiple output fittings (¾", 1", and 1.25") for easy integration with your system.

Product Specifications

• Pump Dimensions: 3.875" W x 4.875" H x 6.25" D

• Driver Dimensions: 3" W x 4" H x 1" D

• Max Flow Rate: 2000 GPH

• Max Head Height: 20 ft.

• Input Size: 1" Slip PVC

• Output Size: ¾" Slip PVC or 1.25" Slip to BSPP Union

• Power Consumption: <90W @ 120VAC

What’s Included

• 1x COR-20 Pump Body

• 1x COR Driver Controller

• 1x 100W DC Power Supply

• 1x 1.25" PVC Union (Slip to BSPP)

• 1x 1" Slip Fitting

• 1x 0.75" Slip Fitting

• 1x 3 ft. AquaBus Cable