Neptune COR-20 Water Pump

The Neptune COR-20 is a controllable DC return pump that can run standalone or connect to an Apex system. It supports internal or external installation, giving you options when arranging a sump and return line.

Select plumbing around the pump's fittings and the flow the aquarium actually needs. The stated maximum of 2,000 gallons per hour is not the flow delivered through every installation: lift height, pipe diameter and restrictive fittings change the result. Leave room to disconnect and service the pump without dismantling the entire return system.

The driver provides adjustable operation, while Apex integration adds monitoring and coordinated control routines. Set appropriate operating limits, verify the return and overflow together, and follow the manufacturer's cleaning procedure to keep deposits from affecting pump performance.