Red Sea Reefer G2+ XL 300 Complete System – Black (65 gallons)

Red Sea Reefer XL 300 Complete System Black -Reef-Ready Excellence

  The Red Sea Reefer XL 300 Complete System – Black has a cutting-edge design with efficient filtration, and enhcnaced water magement. It is easily customizable, and provides reef hobbyists with the freedom to build their ideal aquarium using their own hand-picked preferred equipment.     If you are looking for other tank variations from Red Sea, be sure to check out our Red Sea Aquariums and REEFER only aquarium sections to make sure you are making the right decision on the tank you want.

Advanced Features of the Red Sea Reefer XL 300 G2+

The REEFER G2+ series offers a complete reef-ready system with advanced infrastructure, optimized filtration, and smart automation.

Key Features:

• 3-in-1 ReefATO+ System – Includes an ATO, external leak detector, and a temperature monitor
• Ultra-Clear Rimless Glass – Beveled edges and increased glass thickness enhance durability and viewing clarity.
• Reinforced Marine-Spec Cabinet –Includes laminated plywood that is reinforced with aluminum support to ensure a sturdy foundation
• Optimized Water Flow – Dual side-facing return pump outlets improve circulation (included in 350 G2+ models and above).
• Large Central Overflow Box – Conceals plumbing while offering a large surface skimmer with a removable weir comb for easy cleaning.
• Near-Silent Downflow System – A newly designed rectangular inlet reduces turbulence for quieter operation.
• Customizable Plumbing – Extra bulkhead connectors accommodate both Metric and USA-sized plumbing.
• Precision Flow Control – The new high-precision valve allows easy tuning of water flow for better stability.

  *PLEASE READ: New for 2025 Features and Benefits of the Reefer 300 G2+ Complete System Series    

Optional Lighting Options

• ReefLED G2 115 (Replaced the ReefLED 90 lights)
• ReefLED 90 Universal Mounting arm (Compatible)
• See bottom of the page for the Kit Pricing

 

ReefATO+ – More Than Just an ATO

Every Red Sea Reefer XL 300 G2+ includes the ReefATO+, an advanced automatic top-off system that ensures consistent water levels while offering real-time monitoring and safety features.

ReefATO+ Key Benefits:

• Accurate Digital Temperature Monitor – Displays water temperature within 0.1 degrees (accuracy)
• Leak Detection System – Triggers an audible alarm to help prevent water damage
• Advanced Water Level Sensor – Uses a titanium probe for precise water level monitoring.
• Smart Controller with ReefBeat Integration – Tracks water level, temperature, and potential issues via the ReefBeat app.
• Built-in Safety Shutoffs:
  • Prevents operation when the sensor is disconnected.
  • Stops the pump if it runs dry.
  • Halts operation if a leak is detected.
  • Shuts off if the pump runs longer than expected.
• Compact & Powerful Pump – A 1.8" diameter pump fits in most ATO reservoirs, delivering reliable performance.

Ultra-Clear Glass & Marine-Spec Cabinetry

The REEFER G2+ series features rimless, ultra-clear, beveled-edge glass with thicknesses of up to 19mm, ensuring durability and a crystal-clear view of the tank’s inhabitants.

Enhanced Water Management & Plumbing

Optimized water circulation ensures a healthier reef environment with minimal noise and turbulence.

Water Management Features:

• Dual Return Pump Outlets – Increases flow efficiency and reduces dead zones (available in models 350 G2+ and up).
• Large Overflow Box with Concealed Plumbing – Includes an easy-to-clean weir comb for improved surface skimming.
• Precision Flow Control Valve – Allows fine-tuning of water flow for better consistency.
• Quiet Operation – Enlarged, rectangular downflow inlet reduces turbulence and noise.

Reef-Ready Sump with ReefMat Compatibility

The REEFER G2+ sump improves mechanical and biological filtration with a modular design that adapts to different setups.

Sump Features:

• Mechanical Filtration Chamber – Includes micron filter socks and filter cups to remove debris before it reaches the pumps.
• Adjustable Height Skimmer Chamber – Ensures stable water levels for skimmer efficiency.
• Bubble Trap – Prevents microbubbles from entering the main display tank.
• ReefMat Compatibility – Supports the ReefMat 500 or 1200 Auto Filter Roller (sold separately) with no modifications needed.
• Extra Equipment Chamber – Additional space for chillers, controllers, or reactors (available in most models).

Red Sea Reefer XL 300 Extended Warranty Protection

Every REEFER G2+ aquarium includes a 2-year standard warranty. Customers who register their system within 90 days of purchase receive a free upgrade to a 3-year warranty. Additionally, optional 1-2 year extended protection plans are available, providing up to 5 years of coverage for long-term peace of mind.

Specifications – Red Sea Reefer XL 300 G2+

Tank & System Dimensions:

• Display Tank Dimensions: 36"L x 22"H x 22.6"W
• Display Tank Volume: 65 Gallons
• Total System Volume: 80 Gallons
• Total System Height: 56"
• Sump Volume: 15 Gallons

Glass Thickness:

• Front Glass: 1/2"
• Side Glass: 1/2"
• Bottom Glass: 1/2"

Auto Top-Off (ATO) System:

• ATO Pump Power: 6-10W
• ATO Pump Max Flow: 75 GPH
• ATO Pump Max Head: 8 ft

Build Your Dream Reef Tank with the Red Sea Reefer XL 300

The Red Sea Reefer XL 300 G2+ allows. for full customization of the setup and flexibility. You can benefit for high-end filtration, good build quality, and advanced water management all in one system.      

Similar Products

   

• Reefer G2+ 170 Complete System - Black
• Reefer G2+ 170 Complete System - White
• Reefer G2+ XL 200 Complete System - Black
• Reefer G2+ XL 200 Complete System - White
• Reefer G2+ 250 Complete System - Black
• Reefer G2+ 250 Complete System - White
• Reefer G2+ XL 300 Complete System - White
• Reefer G2+ 350 Complete System - Black
• Reefer G2+ 350 Complete System - White
• Reefer G2+ XL-425 Complete System - Black
• Reefer G2+ Xl-425 Complete System - White

   

Compatible Products

   

• ReefMat 500
• ReefMat 1200
• Reefer Skimmer 300 Protein Skimmer
• ReefRun 5500 Pump - Requires ReefRun Dual DC Pump Controller
• ReefRun Dual DC Pump Controller
• ReefLED 90 Lights
• ReefLED 90 universal mounting arm - Mount your ReefLED 90
• ReefWave 25 Wavemaker

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