Red Sea ReefRun G2 4000 Controllable DC Pump

The Red Sea ReefRun G2 4000 is a controllable DC return pump built for precise, whisper-quiet flow in reef systems. Its adjustable 530–1060 GPH output covers small-to-medium returns, and low power draw (16–38W) keeps energy costs down without sacrificing push.

Pairs with the Red Sea ReefRun controller (sold separately) for multi-mode control via the ReefBeat app — Constant Flow, Feed, Wave, and Custom patterns. Built to last with a ceramic shaft and clean-running motor design.

Available for pickup at our Layton showroom or shipped nationwide.

Features

• Variable DC return pump — 530 to 1060 GPH
• Energy-efficient: only 16–38W
• Max head height of 11.2 ft
• Works with ReefRun Single or Dual DC Controller (sold separately)
• Multi-mode operation via ReefBeat app when paired with controller
• Quiet ceramic-shaft motor
• 10 ft power cable

Specifications

FAQ

Does it come with a controller?
No — this listing is the pump only. You'll need a ReefRun Single or Dual DC Controller to run it.

What tank size is this good for?
It's a strong match for reef tanks in the ~50–90 gallon range as a return pump, depending on head height and plumbing.

Is it quiet?
Yes — the ceramic-shaft DC design runs near-silent in a sump.

Can I use this with an older ReefRun controller?
Yes — G2 pumps are compatible with existing ReefRun DC controllers.

See more reef equipment at squeakysaquatics.com/collections/equipment.