Red Sea Reefer G3 XL 300 Aquarium
Red Sea Reefer 300 G3 – Reef-Ready Aquarium System
A 300L premium reef aquarium system that blends cutting-edge design, smart automation, and quiet performance.
The Red Sea Reefer 300 G3 takes the best of Red Sea’s innovative reef systems and refines them even further. With ultra-clear glass, smart automation, and refined hydrodynamics, it offers the perfect balance between manageable size and professional capability.
Equipped with the intelligent ReefATO+ system, upgraded plumbing, and a modular sump layout, the Reefer 300 G3 gives hobbyists a rock-solid foundation for any coral setup — from soft corals to demanding SPS reefs — all within a sleek, modern design.
Key Lifestyle Benefits
Smart & Connected Stability – Integrated ReefATO+ handles auto top-off, leak detection and temperature monitoring for a consistently stable environment.
Whisper-Quiet Operation – Precision ReefGate valve and improved plumbing design ensure smooth, silent flow and effortless fine-tuning.
Fully Modular Filtration – ReefMat-ready sump with flexible layout options for skimmers, reactors, refugiums or media chambers.
Premium Build & Finish – Ultra-clear rimless glass, bevelled edges and a moisture-resistant cabinet crafted to Red Sea’s renowned standards.
Scalable Reefing System – Designed to grow with you – add smart Red Sea hardware, lighting or automation at any stage.
Core Features
-
Integrated ReefATO+ System
-
Automatic top-off with dual-sensor redundancy
-
Built-in temperature and leak detection
-
Full control via Red Sea’s ReefBeat® app
-
-
Hydrodynamic Flow System (New for G3)
-
Redesigned return and downflow for maximum circulation
-
ReefGate fine-control valve for ultra-quiet tuning
-
Dual return outlets to ensure even water movement
-
-
Sump & Filtration
-
ReefMat-compatible mechanical filtration section
-
Large skimmer chamber with adjustable water level
-
Easy maintenance access and flexible compartment layout
-
-
Cabinet & Frame
-
Marine-spec laminated plywood with epoxy finish
-
Soft-close doors and levelling feet
-
Available in black or white to complement any décor
-
-
Display Glass
-
Rimless, ultra-clear glass for crisp visibility
-
Bevelled edges and low-profile overflow for a premium aesthetic
-
Technical Specifications
| Specification | Details |
|---|---|
| Total System Volume | 300 L |
| Display Tank Volume | 240 L |
| Sump Volume | 60 L |
| Display Dimensions (L×W×H) | 90 × 60 × 55 cm |
| Glass Thickness | 12 mm |
| Plumbing | Pre-assembled quick-connect system |
| Smart Device | ReefATO+ (auto top-off, leak, temperature) |
| Warranty | 3 years standard, extendable to 5 years |
Who is the Reefer 300 G3 For?
-
Reefkeepers seeking a large, feature-rich reef system with smart technology
-
Hobbyists upgrading to a serious SPS or mixed reef setup
-
Aquarists wanting a silent, efficient plumbing system
-
Enthusiasts who value modern design and long-term reliability
-
Anyone looking for a reef system that can grow and evolve with their skill level
Warranty & Support
Every Red Sea Reefer G3 system includes a 3-year manufacturer’s warranty, extendable to 5 years upon registration. UK-based service and spare parts support provide complete peace of mind for years to come.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Red Sea Reefer G3 XL 300 Aquarium
Red Sea Reefer G3 XL 300 Aquarium
Red Sea Reefer 300 G3 – Reef-Ready Aquarium System
A 300L premium reef aquarium system that blends cutting-edge design, smart automation, and quiet performance.
The Red Sea Reefer 300 G3 takes the best of Red Sea’s innovative reef systems and refines them even further. With ultra-clear glass, smart automation, and refined hydrodynamics, it offers the perfect balance between manageable size and professional capability.
Equipped with the intelligent ReefATO+ system, upgraded plumbing, and a modular sump layout, the Reefer 300 G3 gives hobbyists a rock-solid foundation for any coral setup — from soft corals to demanding SPS reefs — all within a sleek, modern design.
Key Lifestyle Benefits
Smart & Connected Stability – Integrated ReefATO+ handles auto top-off, leak detection and temperature monitoring for a consistently stable environment.
Whisper-Quiet Operation – Precision ReefGate valve and improved plumbing design ensure smooth, silent flow and effortless fine-tuning.
Fully Modular Filtration – ReefMat-ready sump with flexible layout options for skimmers, reactors, refugiums or media chambers.
Premium Build & Finish – Ultra-clear rimless glass, bevelled edges and a moisture-resistant cabinet crafted to Red Sea’s renowned standards.
Scalable Reefing System – Designed to grow with you – add smart Red Sea hardware, lighting or automation at any stage.
Core Features
-
Integrated ReefATO+ System
-
Automatic top-off with dual-sensor redundancy
-
Built-in temperature and leak detection
-
Full control via Red Sea’s ReefBeat® app
-
-
Hydrodynamic Flow System (New for G3)
-
Redesigned return and downflow for maximum circulation
-
ReefGate fine-control valve for ultra-quiet tuning
-
Dual return outlets to ensure even water movement
-
-
Sump & Filtration
-
ReefMat-compatible mechanical filtration section
-
Large skimmer chamber with adjustable water level
-
Easy maintenance access and flexible compartment layout
-
-
Cabinet & Frame
-
Marine-spec laminated plywood with epoxy finish
-
Soft-close doors and levelling feet
-
Available in black or white to complement any décor
-
-
Display Glass
-
Rimless, ultra-clear glass for crisp visibility
-
Bevelled edges and low-profile overflow for a premium aesthetic
-
Technical Specifications
| Specification | Details |
|---|---|
| Total System Volume | 300 L |
| Display Tank Volume | 240 L |
| Sump Volume | 60 L |
| Display Dimensions (L×W×H) | 90 × 60 × 55 cm |
| Glass Thickness | 12 mm |
| Plumbing | Pre-assembled quick-connect system |
| Smart Device | ReefATO+ (auto top-off, leak, temperature) |
| Warranty | 3 years standard, extendable to 5 years |
Who is the Reefer 300 G3 For?
-
Reefkeepers seeking a large, feature-rich reef system with smart technology
-
Hobbyists upgrading to a serious SPS or mixed reef setup
-
Aquarists wanting a silent, efficient plumbing system
-
Enthusiasts who value modern design and long-term reliability
-
Anyone looking for a reef system that can grow and evolve with their skill level
Warranty & Support
Every Red Sea Reefer G3 system includes a 3-year manufacturer’s warranty, extendable to 5 years upon registration. UK-based service and spare parts support provide complete peace of mind for years to come.
Original: $2,134.42
-70%$2,134.42
$640.33Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Red Sea Reefer 300 G3 – Reef-Ready Aquarium System
A 300L premium reef aquarium system that blends cutting-edge design, smart automation, and quiet performance.
The Red Sea Reefer 300 G3 takes the best of Red Sea’s innovative reef systems and refines them even further. With ultra-clear glass, smart automation, and refined hydrodynamics, it offers the perfect balance between manageable size and professional capability.
Equipped with the intelligent ReefATO+ system, upgraded plumbing, and a modular sump layout, the Reefer 300 G3 gives hobbyists a rock-solid foundation for any coral setup — from soft corals to demanding SPS reefs — all within a sleek, modern design.
Key Lifestyle Benefits
Smart & Connected Stability – Integrated ReefATO+ handles auto top-off, leak detection and temperature monitoring for a consistently stable environment.
Whisper-Quiet Operation – Precision ReefGate valve and improved plumbing design ensure smooth, silent flow and effortless fine-tuning.
Fully Modular Filtration – ReefMat-ready sump with flexible layout options for skimmers, reactors, refugiums or media chambers.
Premium Build & Finish – Ultra-clear rimless glass, bevelled edges and a moisture-resistant cabinet crafted to Red Sea’s renowned standards.
Scalable Reefing System – Designed to grow with you – add smart Red Sea hardware, lighting or automation at any stage.
Core Features
-
Integrated ReefATO+ System
-
Automatic top-off with dual-sensor redundancy
-
Built-in temperature and leak detection
-
Full control via Red Sea’s ReefBeat® app
-
-
Hydrodynamic Flow System (New for G3)
-
Redesigned return and downflow for maximum circulation
-
ReefGate fine-control valve for ultra-quiet tuning
-
Dual return outlets to ensure even water movement
-
-
Sump & Filtration
-
ReefMat-compatible mechanical filtration section
-
Large skimmer chamber with adjustable water level
-
Easy maintenance access and flexible compartment layout
-
-
Cabinet & Frame
-
Marine-spec laminated plywood with epoxy finish
-
Soft-close doors and levelling feet
-
Available in black or white to complement any décor
-
-
Display Glass
-
Rimless, ultra-clear glass for crisp visibility
-
Bevelled edges and low-profile overflow for a premium aesthetic
-
Technical Specifications
| Specification | Details |
|---|---|
| Total System Volume | 300 L |
| Display Tank Volume | 240 L |
| Sump Volume | 60 L |
| Display Dimensions (L×W×H) | 90 × 60 × 55 cm |
| Glass Thickness | 12 mm |
| Plumbing | Pre-assembled quick-connect system |
| Smart Device | ReefATO+ (auto top-off, leak, temperature) |
| Warranty | 3 years standard, extendable to 5 years |
Who is the Reefer 300 G3 For?
-
Reefkeepers seeking a large, feature-rich reef system with smart technology
-
Hobbyists upgrading to a serious SPS or mixed reef setup
-
Aquarists wanting a silent, efficient plumbing system
-
Enthusiasts who value modern design and long-term reliability
-
Anyone looking for a reef system that can grow and evolve with their skill level
Warranty & Support
Every Red Sea Reefer G3 system includes a 3-year manufacturer’s warranty, extendable to 5 years upon registration. UK-based service and spare parts support provide complete peace of mind for years to come.
