Red Sea REEFER MAX 750 G3+ Aquarium System – 159 Gallons

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

The Red Sea REEFER MAX 750 G3+ combines exceptional aquarium craftsmanship, powerful reefkeeping equipment, and intelligent automation into one complete saltwater aquarium system.

Featuring a spacious 158.5-gallon ultra-clear glass display, a 39.6-gallon sump, and Red Sea's latest ReefControl Pro technology, the REEFER MAX 750 G3+ is designed for reefkeepers seeking an impressive large-format aquarium with coordinated equipment and simplified management.

The MAX configuration includes premium ReefLED G2 lighting, ReefWave circulation pumps, ReefRun return pump, ReefMat automatic filtration, DC protein skimmer, and integrated monitoring and automatic top-off—all designed to work together within Red Sea's ReefBeat ecosystem.

With nearly six feet of display length and generous aquascaping space, the REEFER MAX 750 G3+ is an excellent choice for expansive mixed reefs, SPS-dominant aquariums, and impressive fish and coral displays.

Key Features

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

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

• ReefControl Pro Controller – Advanced smart monitoring with included pH and temperature probe

• 3 × ReefLED G2 170 Lights – High-performance reef lighting with ReefBeat connectivity

• 2 × ReefWave 45 Pumps – Wide cross-flow circulation up to 3,960 GPH each

• ReefRun G2 8000 Return Pump – Adjustable DC return flow

• ReefMat 1200 Roller Filter – Automatic mechanical filtration

• REEFER DC 900 Protein Skimmer – High-performance protein skimming with self-leveling technology

• Digital Automatic Top-Off – Water-level management with temperature monitoring

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

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

Advanced ReefControl Pro Technology

The G3+ generation introduces Red Sea's ReefControl Pro, bringing aquarium monitoring, automation, and equipment management together within one connected system.

Through the ReefBeat app, compatible Red Sea equipment can be monitored and controlled from your smartphone.

The included system features:

• ReefSense pH and temperature probe

• Digital ATO module with integrated temperature sensor

• Support for up to five additional compatible ReefSense probes and sensors

• Connections for two compatible 12V DC devices

• ReefBeat app connectivity

This connected platform makes everyday aquarium management more convenient while providing flexibility for future monitoring and automation upgrades.

Premium Ultra-Clear Glass & Reinforced Construction

The REEFER MAX 750 G3+ features a beautiful ultra-clear glass display designed to showcase vibrant corals, fish, and elaborate aquascaping with excellent clarity.

All four vertical glass panels and the bottom use 19mm (0.75") glass bonded with high-quality euro-silicone.

Reinforced eurobracing and bottom bracing provide exceptional structural support.

The aquarium rests on an aluminum-supported cabinet, combining strength with an elegant floating appearance.

Redesigned High-Flow Plumbing

The G3+ generation features redesigned hydrodynamic plumbing engineered to improve water circulation efficiency while reducing energy consumption.

A high-precision gate valve allows fine overflow adjustments, helping achieve quiet and consistent operation.

Two 32mm return outlets distribute water back into the display, supporting single or dual return-pump configurations.

Complete Reef-Ready Equipment Package

ReefLED G2 170 Lighting – 3 Included

Three Red Sea ReefLED G2 170 fixtures provide powerful, coral-focused lighting across the expansive aquarium display.

These ReefBeat-compatible fixtures allow customizable lighting schedules, intensity, and color settings to support a wide range of reef aquarium environments.

The three-fixture configuration provides broad lighting coverage across the approximately 71-inch-long display.

ReefWave 45 Circulation Pumps – 2 Included

Two ReefWave 45 pumps provide broad, customizable cross-flow circulation throughout the aquarium.

Each pump delivers up to 3,960 GPH, helping distribute water around rockwork and coral colonies while reducing stagnant areas.

Customizable flow patterns allow reefkeepers to adjust circulation based on the requirements of their livestock.

ReefRun G2 8000 Return Pump – 1 Included

The efficient DC-powered ReefRun G2 8000 provides adjustable return flow from approximately 1,080 to 2,200 GPH.

ReefBeat integration allows convenient control of return flow and coordination with compatible aquarium routines.

ReefMat 1200 Automatic Roller Filter

The included ReefMat 1200 automatically advances its filter fleece to remove suspended waste and debris from aquarium water.

This reduces routine mechanical filtration maintenance while helping maintain consistent water clarity.

Its large-capacity design is well suited for the demands of a substantial reef aquarium.

REEFER DC 900 Protein Skimmer

The included REEFER DC 900 efficiently removes dissolved organic waste before it breaks down in the aquarium.

Featuring approximately 530 GPH water flow and 235 GPH air flow, the skimmer provides high-performance waste removal and aeration.

Self-leveling technology helps maintain stable skimming performance and reduces the risk of excessive skimming or collection-cup overflow.

Integrated Digital Automatic Top-Off

The included digital ATO module automatically replaces evaporated freshwater to help maintain consistent water levels and salinity.

An integrated temperature sensor provides additional aquarium monitoring through ReefControl Pro.

Versatile REEF-SPEC Sump

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

Features include:

• ReefMat-ready mechanical filtration area

• Adjustable skimmer chamber

• Integrated bubble trap

• Slide-in refugium divider

• Additional space for compatible filtration equipment

The MAX configuration includes the ReefMat 1200 and REEFER DC 900 selected to work with this aquarium system.

Convenient Cabinet & Equipment Management

The reinforced aluminum-supported cabinet combines modern styling with convenient access to aquarium equipment.

An included Slide-Out Control Panel 60 provides an organized mounting location for compatible electronics, keeping controls accessible for adjustments and maintenance.

What's Included

• REEFER 750 G3+ ultra-clear glass aquarium

• Reinforced aquarium cabinet

• REEF-SPEC sump and plumbing

• ReefControl Pro Controller

• ReefSense pH and temperature probe

• Digital ATO module with integrated temperature sensor

• 3 × ReefLED G2 170 lighting fixtures

• 2 × ReefWave 45 circulation pumps

• 1 × ReefRun G2 8000 return pump

• 1 × ReefMat 1200 automatic roller filter

• 1 × REEFER DC 900 protein skimmer

• 1 × Slide-Out Control Panel 60

Aquarium Specifications

Specification	Details
Manufacturer	Red Sea
Model	REEFER MAX 750 G3+
Display Volume	158.5 Gallons
Sump Volume	39.6 Gallons
Total System Volume	198.1 Gallons
Display Dimensions	70.9" L × 25.6" W × 23.6" H
Overall System Height	58.3"
Front Glass Thickness	19mm (0.75")
Side Glass Thickness	19mm (0.75")
Bottom Glass Thickness	19mm (0.75")
Rear Glass Thickness	19mm (0.75")
Glass Type	Ultra-Clear Glass
Bracing	Eurobrace + Bottom Brace
Return Outlets	2 × 32mm
Return Pump Configuration	Single or Dual
Cabinet Structure	Aluminum-Supported
Included Controller	ReefControl Pro
Available Cabinet Colors	Black or White
Manufacturer Warranty	Up to 5 Years

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, we understand that choosing a large reef aquarium is a significant investment. Our team can help you plan your aquarium setup, select compatible accessories, and choose quality livestock for your new system.

Whether you're creating an elaborate mixed reef, SPS-dominant aquarium, or impressive saltwater display, we're here to help you make the most of your Red Sea REEFER MAX 750 G3+.