Red Sea REEFER 750 G3+ Aquarium System – 159 Gallons

A Premium, Customizable Large-Format Reef Aquarium with Advanced Smart Control

The Red Sea REEFER 750 G3+ combines exceptional aquarium craftsmanship, reinforced construction, and advanced smart monitoring technology into a premium large-format reef-ready aquarium system.

Featuring a spacious 158.5-gallon ultra-clear glass display, a 39.6-gallon sump, and Red Sea's ReefControl Pro technology, the REEFER 750 G3+ provides an exceptional foundation for reefkeepers who want a large, impressive aquarium with the freedom to select their own equipment.

With nearly six feet of display length, the REEFER 750 G3+ offers outstanding aquascaping opportunities, generous swimming space, and room for impressive coral colonies.

Unlike the fully equipped MAX configuration, the standard REEFER 750 G3+ allows you to select your preferred lighting, circulation pumps, return pump, protein skimmer, and filtration equipment while retaining the premium construction, smart controls, and advanced plumbing of the G3+ generation.

Key Features

• 198.1 Gallons Total System Volume – 158.5-gallon display with 39.6-gallon sump

• Ultra-Clear Glass Construction – Premium glass bonded with high-quality euro-silicone

• Reinforced Eurobracing & Bottom Bracing – Exceptional structural support

• ReefControl Pro Controller Included – Connected monitoring and expandable automation

• Digital Automatic Top-Off Included – Integrated water-level management with temperature sensor

• Redesigned High-Flow Plumbing – Improved circulation efficiency

• Dual 32mm Return Outlets – Supports single or dual return pumps

• REEF-SPEC Sump – ReefMat-ready with adjustable filtration compartments

• Aluminum-Supported Cabinet – Reinforced structure with contemporary floating appearance

• Customizable Equipment Configuration – Choose your preferred lighting and filtration equipment

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

Advanced ReefControl Pro Technology

The included ReefControl Pro provides a connected platform for monitoring and managing compatible Red Sea equipment through the 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 digital ATO module automatically replaces evaporated freshwater and incorporates an integrated temperature sensor.

Additional compatible ReefSense probes, including pH monitoring, are available separately.

Premium Ultra-Clear Glass & Reinforced Construction

The REEFER 750 G3+ features an expansive 70.9-inch ultra-clear glass display designed to showcase vibrant fish, corals, and elaborate aquascaping.

All four vertical glass panels and the bottom are constructed using 19mm (0.75") glass.

High-quality euro-silicone bonding, reinforced eurobracing, and additional bottom bracing provide exceptional structural support.

The aquarium rests on a reinforced aluminum-supported cabinet designed to provide stability while maintaining a modern floating appearance.

Redesigned High-Flow Plumbing

The G3+ platform features redesigned hydrodynamic plumbing designed to improve circulation efficiency and reduce energy consumption.

A high-precision gate valve provides accurate overflow adjustments for quiet, consistent operation.

Two 32mm return outlets support either single or dual return-pump configurations, giving reefkeepers flexibility when designing their circulation system.

Versatile REEF-SPEC Sump

The included 39.6-gallon REEF-SPEC sump provides a spacious foundation for your preferred filtration equipment.

Features include:

• ReefMat-ready mechanical filtration area

• Adjustable protein skimmer chamber

• Integrated bubble trap

• Slide-in refugium divider

• Flexible space for additional filtration equipment

Convenient Cabinet & Equipment Management

The modern cabinet combines premium styling with practical access to the sump, plumbing, and filtration equipment.

Its reinforced aluminum-supported construction provides stability for this large aquarium while maintaining the elegant floating appearance of the REEFER series.

What's Included

• REEFER 750 G3+ ultra-clear glass aquarium

• Reinforced aquarium cabinet

• 39.6-gallon REEF-SPEC sump

• Complete plumbing with high-precision gate valve

• ReefControl Pro Controller

• Digital ATO module with integrated temperature sensor

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

Aquarium Specifications

Manufacturer Warranty

Red Sea provides a standard 3-year manufacturer warranty on REEFER G3 aquariums.

Register your new aquarium within 90 days of purchase to receive an additional two years of coverage at no extra cost, for up to five years total.

Warranty coverage is subject to Red Sea's terms and conditions.

Build Your Dream Reef with Lush Corals

At Lush Corals, our team can help you choose compatible lighting, pumps, filtration equipment, and quality livestock to create an impressive reef aquarium tailored to your goals.

Whether you're planning an expansive mixed reef, SPS-dominant display, or stunning fish aquarium, the Red Sea REEFER 750 G3+ provides a premium foundation for your next reefkeeping project.