Red Sea Reefer G3 350 Aquarium
Red Sea Reefer 350 G3 – Reef-Ready Aquarium System
A 350 L professional-grade reef aquarium that combines precision engineering, smart control, and stunning design.
The Red Sea Reefer 350 G3 delivers the next level of reef-keeping performance — with ultra-clear glass, upgraded hydrodynamic plumbing, and Red Sea’s intelligent ReefATO+ system built in. Offering a large, flexible footprint and modular sump, it’s designed for serious hobbyists who demand both beauty and function.
From whisper-quiet flow to smart automation, the Reefer 350 G3 provides the perfect foundation for a thriving coral reef — and looks incredible doing it.
Key Benefits
Smart Stability – The integrated ReefATO+ keeps water levels consistent, monitors temperature, and detects leaks — all via the ReefBeat® app.
Silent Performance – Upgraded plumbing and the precision ReefGate valve ensure ultra-quiet operation with perfectly balanced flow.
Professional-Grade Filtration – Modular, ReefMat-ready sump with space for skimmer, refugium or reactors — adaptable for any setup.
Sleek & Stylish Design – Rimless ultra-clear glass, hidden overflow, and a premium marine-spec cabinet with clean lines and soft-close doors.
Built for Expansion – Compatible with Red Sea’s full range of smart reef hardware and lighting, allowing easy future upgrades.
Core Features
-
Integrated ReefATO+ System
-
Dual optical sensors with redundancy
-
Temperature probe with ±0.1 °C precision
-
Leak detection and smart auto-shutoff
-
Managed through the ReefBeat® mobile app
-
-
Hydrodynamic Flow System
-
Efficient return layout with reduced elbows
-
Precision ReefGate valve for silent downflow control
-
Dual return outlets for even circulation throughout the display
-
-
Filtration & Sump Design
-
Glass sump with adjustable compartments
-
ReefMat-ready section for automated mechanical filtration
-
Large skimmer chamber with water-level adjustment
-
Easy maintenance access
-
-
Cabinet Construction
-
Marine-spec plywood with epoxy coating
-
Moisture-resistant finish, soft-close doors, adjustable feet
-
Available in black or white finishes
-
-
Display Glass
-
Ultra-clear, bevel-edged rimless glass for maximum clarity
-
Clean overflow and modern open-top aesthetic
-
Technical Specifications
| Specification | Details |
|---|---|
| Total System Volume | 350 L |
| Display Tank Volume | 280 L |
| Sump Volume | 70 L |
| Display Dimensions (L×W×H) | 120 × 57.5 × 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 350 G3 For?
-
Reefkeepers seeking a large, professional-grade system with smart automation
-
Hobbyists building advanced SPS or mixed reefs
-
Aquarists who want silent operation and effortless maintenance
-
Enthusiasts who appreciate premium quality and aesthetics
-
Anyone upgrading from smaller systems and ready for serious reefing
Warranty & Support
All Red Sea Reefer G3 systems include a 3-year manufacturer’s warranty, extendable to 5 years with registration. UK-based support and readily available spare parts provide complete peace of mind.
Product Information
Product Information
Shipping & Returns
Shipping & Returns






Red Sea Reefer G3 350 Aquarium
Red Sea Reefer G3 350 Aquarium
Red Sea Reefer 350 G3 – Reef-Ready Aquarium System
A 350 L professional-grade reef aquarium that combines precision engineering, smart control, and stunning design.
The Red Sea Reefer 350 G3 delivers the next level of reef-keeping performance — with ultra-clear glass, upgraded hydrodynamic plumbing, and Red Sea’s intelligent ReefATO+ system built in. Offering a large, flexible footprint and modular sump, it’s designed for serious hobbyists who demand both beauty and function.
From whisper-quiet flow to smart automation, the Reefer 350 G3 provides the perfect foundation for a thriving coral reef — and looks incredible doing it.
Key Benefits
Smart Stability – The integrated ReefATO+ keeps water levels consistent, monitors temperature, and detects leaks — all via the ReefBeat® app.
Silent Performance – Upgraded plumbing and the precision ReefGate valve ensure ultra-quiet operation with perfectly balanced flow.
Professional-Grade Filtration – Modular, ReefMat-ready sump with space for skimmer, refugium or reactors — adaptable for any setup.
Sleek & Stylish Design – Rimless ultra-clear glass, hidden overflow, and a premium marine-spec cabinet with clean lines and soft-close doors.
Built for Expansion – Compatible with Red Sea’s full range of smart reef hardware and lighting, allowing easy future upgrades.
Core Features
-
Integrated ReefATO+ System
-
Dual optical sensors with redundancy
-
Temperature probe with ±0.1 °C precision
-
Leak detection and smart auto-shutoff
-
Managed through the ReefBeat® mobile app
-
-
Hydrodynamic Flow System
-
Efficient return layout with reduced elbows
-
Precision ReefGate valve for silent downflow control
-
Dual return outlets for even circulation throughout the display
-
-
Filtration & Sump Design
-
Glass sump with adjustable compartments
-
ReefMat-ready section for automated mechanical filtration
-
Large skimmer chamber with water-level adjustment
-
Easy maintenance access
-
-
Cabinet Construction
-
Marine-spec plywood with epoxy coating
-
Moisture-resistant finish, soft-close doors, adjustable feet
-
Available in black or white finishes
-
-
Display Glass
-
Ultra-clear, bevel-edged rimless glass for maximum clarity
-
Clean overflow and modern open-top aesthetic
-
Technical Specifications
| Specification | Details |
|---|---|
| Total System Volume | 350 L |
| Display Tank Volume | 280 L |
| Sump Volume | 70 L |
| Display Dimensions (L×W×H) | 120 × 57.5 × 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 350 G3 For?
-
Reefkeepers seeking a large, professional-grade system with smart automation
-
Hobbyists building advanced SPS or mixed reefs
-
Aquarists who want silent operation and effortless maintenance
-
Enthusiasts who appreciate premium quality and aesthetics
-
Anyone upgrading from smaller systems and ready for serious reefing
Warranty & Support
All Red Sea Reefer G3 systems include a 3-year manufacturer’s warranty, extendable to 5 years with registration. UK-based support and readily available spare parts provide complete peace of mind.
Original: $2,401.39
-70%$2,401.39
$720.42Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Red Sea Reefer 350 G3 – Reef-Ready Aquarium System
A 350 L professional-grade reef aquarium that combines precision engineering, smart control, and stunning design.
The Red Sea Reefer 350 G3 delivers the next level of reef-keeping performance — with ultra-clear glass, upgraded hydrodynamic plumbing, and Red Sea’s intelligent ReefATO+ system built in. Offering a large, flexible footprint and modular sump, it’s designed for serious hobbyists who demand both beauty and function.
From whisper-quiet flow to smart automation, the Reefer 350 G3 provides the perfect foundation for a thriving coral reef — and looks incredible doing it.
Key Benefits
Smart Stability – The integrated ReefATO+ keeps water levels consistent, monitors temperature, and detects leaks — all via the ReefBeat® app.
Silent Performance – Upgraded plumbing and the precision ReefGate valve ensure ultra-quiet operation with perfectly balanced flow.
Professional-Grade Filtration – Modular, ReefMat-ready sump with space for skimmer, refugium or reactors — adaptable for any setup.
Sleek & Stylish Design – Rimless ultra-clear glass, hidden overflow, and a premium marine-spec cabinet with clean lines and soft-close doors.
Built for Expansion – Compatible with Red Sea’s full range of smart reef hardware and lighting, allowing easy future upgrades.
Core Features
-
Integrated ReefATO+ System
-
Dual optical sensors with redundancy
-
Temperature probe with ±0.1 °C precision
-
Leak detection and smart auto-shutoff
-
Managed through the ReefBeat® mobile app
-
-
Hydrodynamic Flow System
-
Efficient return layout with reduced elbows
-
Precision ReefGate valve for silent downflow control
-
Dual return outlets for even circulation throughout the display
-
-
Filtration & Sump Design
-
Glass sump with adjustable compartments
-
ReefMat-ready section for automated mechanical filtration
-
Large skimmer chamber with water-level adjustment
-
Easy maintenance access
-
-
Cabinet Construction
-
Marine-spec plywood with epoxy coating
-
Moisture-resistant finish, soft-close doors, adjustable feet
-
Available in black or white finishes
-
-
Display Glass
-
Ultra-clear, bevel-edged rimless glass for maximum clarity
-
Clean overflow and modern open-top aesthetic
-
Technical Specifications
| Specification | Details |
|---|---|
| Total System Volume | 350 L |
| Display Tank Volume | 280 L |
| Sump Volume | 70 L |
| Display Dimensions (L×W×H) | 120 × 57.5 × 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 350 G3 For?
-
Reefkeepers seeking a large, professional-grade system with smart automation
-
Hobbyists building advanced SPS or mixed reefs
-
Aquarists who want silent operation and effortless maintenance
-
Enthusiasts who appreciate premium quality and aesthetics
-
Anyone upgrading from smaller systems and ready for serious reefing
Warranty & Support
All Red Sea Reefer G3 systems include a 3-year manufacturer’s warranty, extendable to 5 years with registration. UK-based support and readily available spare parts provide complete peace of mind.





















