Red Sea REEFER S-550 G3+ Aquarium System – 118 Gallons

Premium Aquarium Construction with the Flexibility to Create Your Ideal Reef

The Red Sea REEFER S-550 G3+ combines premium aquarium craftsmanship, advanced plumbing, and intelligent monitoring technology into a versatile reef-ready system.

Featuring a 118.3-gallon ultra-clear glass display, a 26.7-gallon sump, and Red Sea's ReefControl Pro technology, the S-550 G3+ offers a spacious reef aquarium with the flexibility to choose your own lighting, pumps, and filtration equipment.

Its 47.2-inch display provides generous aquascaping space while maintaining a manageable footprint, making it an excellent choice for reefkeepers seeking a premium large aquarium without moving into the largest S-Series models.

Key Features

• 145 Gallons Total System Volume – 118.3-gallon display with 26.7-gallon sump

• Ultra-Clear Glass Construction – 19mm glass with reinforced eurobracing and bottom bracing

• ReefControl Pro Controller Included – Smart monitoring with ReefBeat connectivity

• Digital Automatic Top-Off Included – Water-level management with integrated temperature sensor

• Redesigned High-Flow Plumbing – Improved circulation efficiency

• Dual 25mm Return Outlets – Flexible single or dual return-pump configurations

• REEF-SPEC Sump – ReefMat-ready with adjustable skimmer chamber and refugium flexibility

• Aluminum-Supported Cabinet – Reinforced construction with contemporary styling

• Slide-Out Control Panel 60 – Organized, accessible electronics

• Customizable Equipment Configuration – Select your preferred lighting, circulation, and filtration equipment

• Up to 5-Year Manufacturer Warranty – With qualifying registration

Advanced ReefControl Pro Technology

The included ReefControl Pro provides a connected foundation for managing compatible aquarium equipment and sensors through Red Sea's ReefBeat app.

Features include:

• Support for up to seven compatible ReefSense probes and sensors

• Connections for two compatible 12V DC devices

• ReefBeat app connectivity

• Expandable monitoring and automation capabilities

The included digital ATO module helps maintain consistent aquarium water levels and incorporates an integrated temperature sensor.

Additional ReefSense probes, including pH, are sold separately.

Premium Ultra-Clear Glass & Reinforced Construction

The REEFER S-550 G3+ features 19mm (0.75") ultra-clear glass bonded with high-quality euro-silicone.

Reinforced eurobracing and bottom bracing provide additional structural support while maintaining a clean, modern appearance.

The aquarium rests on a sturdy aluminum-supported cabinet with a sleek floating design.

Redesigned High-Flow Plumbing

The G3+ generation features improved hydrodynamic plumbing designed to provide efficient water circulation and quieter operation.

A high-precision gate valve allows accurate overflow adjustments.

Two 25mm return outlets support single or dual return-pump configurations, providing flexibility when planning your custom reef system.

Versatile REEF-SPEC Sump

The included 26.7-gallon REEF-SPEC sump provides flexible filtration options.

Features include:

• ReefMat-ready mechanical filtration area

• Adjustable skimmer chamber

• Integrated bubble trap

• Slide-in refugium divider

• Space for additional equipment

What's Included

• REEFER S-550 G3+ ultra-clear glass aquarium

• Reinforced aquarium cabinet

• REEF-SPEC sump

• Complete plumbing with high-precision gate valve

• ReefControl Pro Controller

• Digital ATO module with integrated temperature sensor

• Slide-Out Control Panel 60

Equipment Sold Separately: Aquarium lighting, circulation pumps, return pump, protein skimmer, automatic roller filter, and additional monitoring probes.

Aquarium Specifications

Manufacturer Warranty

Red Sea provides a standard 3-year manufacturer warranty on REEFER G3 aquariums. Register your aquarium within 90 days of purchase to receive an additional two years of coverage at no extra cost, subject to Red Sea's warranty terms and conditions.

Build Your Dream Reef with Lush Corals

At Lush Corals, we can help you select the ideal lighting, circulation pumps, filtration equipment, and livestock for your new aquarium.

Whether you're creating a colorful mixed reef or upgrading an existing system, the Red Sea REEFER S-550 G3+ provides a premium foundation for years of reefkeeping enjoyment.