Red Sea REEFER MAX 300 G3+ Aquarium System – 65 Gallons

A Premium, Fully Equipped Reef Aquarium with Advanced Smart Control

The Red Sea REEFER MAX 300 G3+ combines exceptional aquarium craftsmanship, powerful reefkeeping equipment, and intelligent automation into one complete saltwater aquarium system.

Featuring a 65-gallon ultra-clear glass display, a 14.3-gallon sump, and Red Sea's latest ReefControl Pro technology, the REEFER MAX 300 G3+ is designed for reefkeepers who want a premium 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.

Whether you're creating a colorful mixed reef, SPS-dominant aquarium, or impressive fish and coral display, the REEFER MAX 300 G3+ provides the performance, versatility, and elegant design to bring your vision to life.

Key Features

• 79.3 Gallons Total System Volume – 65-gallon display with a 14.3-gallon sump

• Ultra-Clear Glass Construction – 12mm front, side, and bottom glass with 10mm rear glass

• Reinforced Eurobracing – Additional structural support with a clean, modern appearance

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

• 2 × ReefLED G2 115 Lights – High-performance reef lighting with ReefBeat connectivity

• 2 × ReefWave 25 Pumps – Wide, customizable cross-flow circulation

• ReefRun G2 4000 Return Pump – Efficient, adjustable DC return flow

• ReefMat 500 Roller Filter – Automatic mechanical filtration for reduced maintenance

• REEFER DC 300 Protein Skimmer – Efficient protein skimming with self-leveling technology

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

• Slide-Out Control Panel 60 – Convenient organization and access to aquarium electronics

• Up to 5-Year Manufacturer Warranty – 3 years standard plus 2 additional years with qualifying registration

Advanced ReefControl Pro Technology

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

Through the ReefBeat app, compatible Red Sea devices can be monitored and controlled from your smartphone, making everyday aquarium management more convenient.

The included ReefControl Pro system features:

• ReefSense pH and temperature probe

• Digital automatic top-off module with integrated temperature sensor

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

• Connections for two compatible 12V DC devices

• ReefBeat app integration for connected monitoring and control

ReefControl Pro provides a flexible foundation for expanding your aquarium's monitoring and automation capabilities as your reef develops.

Premium Ultra-Clear Glass & Reinforced Construction

The REEFER MAX 300 G3+ features a stunning ultra-clear glass display designed to showcase vibrant fish, corals, and aquascaping with exceptional clarity.

The front, side, and bottom panels are constructed using 12mm (0.47") glass, while the rear panel uses 10mm (0.39") glass.

All panels are bonded using high-quality euro-silicone, while reinforced eurobracing provides additional structural support.

The aquarium rests on an aluminum-supported cabinet with a modern floating appearance, offering both strength and contemporary styling.

Redesigned High-Flow Plumbing

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

The updated plumbing design delivers up to 50% more water circulation compared with the previous generation.

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

A single 25mm return outlet distributes water back into the display, working with the included ReefRun G2 4000 return pump.

Complete Reef-Ready Equipment Package

ReefLED G2 115 Lighting – 2 Included

Two Red Sea ReefLED G2 115 fixtures provide powerful, coral-focused lighting across the aquarium display.

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

The two-fixture configuration provides balanced lighting coverage across the 35.4-inch display, creating an excellent foundation for healthy coral growth and vibrant coloration.

ReefWave 25 Circulation Pumps – 2 Included

Two ReefWave 25 pumps provide broad, cross-flow water circulation throughout the aquarium.

Each pump delivers up to 1,980 GPH, with customizable flow patterns that help promote water movement around rockwork and corals while reducing stagnant areas.

The wide, linear flow helps create natural water movement throughout the display while supporting the circulation requirements of a variety of coral species.

ReefRun G2 4000 Return Pump – 1 Included

The efficient DC-powered ReefRun G2 4000 provides adjustable return flow from approximately 530 to 1,060 GPH.

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

Its adjustable performance allows reefkeepers to fine-tune circulation between the sump and display while maintaining efficient operation.

ReefMat 500 Automatic Roller Filter

The included ReefMat 500 automatically advances its filter fleece to remove suspended waste and debris from aquarium water.

This reduces the need for frequent manual filter maintenance while helping maintain consistent mechanical filtration and clearer water.

Its automated design is especially beneficial for keeping routine maintenance manageable while supporting a healthy reef aquarium environment.

REEFER DC 300 Protein Skimmer

The included REEFER DC 300 efficiently removes dissolved organic waste before it can break down in the aquarium.

Featuring approximately 265 GPH water flow and 130 GPH air flow, the skimmer provides effective organic waste removal and consistent aeration.

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

Integrated Digital Automatic Top-Off

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

An integrated temperature sensor provides additional monitoring through the ReefControl ecosystem.

Versatile REEF-SPEC Sump

The included 14.3-gallon REEF-SPEC sump provides a thoughtfully designed foundation for the aquarium's filtration equipment.

Features include:

• ReefMat-ready mechanical filtration area

• Adjustable protein skimmer chamber

• Integrated bubble trap

• Slide-in refugium divider

• Flexible space for compatible filtration equipment

The MAX configuration arrives with the ReefMat 500 and REEFER DC 300 skimmer selected to work with the aquarium's filtration system.

Convenient Cabinet & Equipment Management

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

An included Slide-Out Control Panel 60 provides an organized mounting location for compatible equipment and keeps electronics easily accessible for adjustments and maintenance.

The cabinet's aluminum-supported construction provides a stable foundation while maintaining the elegant floating appearance of the REEFER series.

What's Included

The REEFER MAX 300 G3+ comes with the following equipment:

• REEFER 300 G3+ ultra-clear glass aquarium

• Reinforced aquarium cabinet

• 14.3-gallon REEF-SPEC sump and plumbing system

• ReefControl Pro Controller

• ReefSense pH and temperature probe

• Digital ATO module with integrated temperature sensor

• 2 × ReefLED G2 115 lighting fixtures

• 2 × ReefWave 25 circulation pumps

• 1 × ReefRun G2 4000 return pump

• 1 × ReefMat 500 automatic roller filter

• 1 × REEFER DC 300 protein skimmer

• 1 × Slide-Out Control Panel 60

Aquarium Specifications

Specification	Details
Manufacturer	Red Sea
Model	REEFER MAX 300 G3+
Display Volume	65 Gallons
Sump Volume	14.3 Gallons
Total System Volume	79.3 Gallons
Display Dimensions	35.4" L × 22.6" W × 21.7" H
Overall System Height	55.9"
Front Glass Thickness	12mm (0.47")
Side Glass Thickness	12mm (0.47")
Bottom Glass Thickness	12mm (0.47")
Rear Glass Thickness	10mm (0.39")
Glass Type	Ultra-Clear Glass
Bracing	Eurobrace
Return Outlets	1 × 25mm
Return Pump Configuration	Single
Cabinet Structure	Aluminum Support with Plywood Cabinet
Available Cabinet Colors	Black or White
Included Controller	ReefControl Pro
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 with Red Sea within 90 days of purchase to receive an additional two years of coverage at no extra cost, for a total of up to five years.

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 premium reef aquarium is a significant investment. Our team can help you plan your aquarium setup, select additional accessories, and choose quality livestock for your new system.

Whether you're building your first premium reef aquarium or upgrading an established reef, we're here to help you make the most of your Red Sea REEFER MAX 300 G3+.