Red Sea Reefer Max G3 S-850 Aquarium
Red Sea Reefer Max S-850 G3 – Premium Fully Equipped Smart Reef System
An 850 L premium, fully equipped plug-and-play reef system engineered for large, demanding reef aquariums where performance, stability, and automation are non-negotiable.
The Red Sea Reefer Max S-850 G3 represents the upper tier of the Reefer S-Series, combining extra-wide and deep display dimensions, a rigid aluminium super-structure, and Red Sea’s complete smart reef ecosystem.
Every essential component — lighting, circulation, mechanical filtration, skimming, return pump and automation — is factory-matched and seamlessly integrated through the ReefBeat® App, delivering professional-grade reefkeeping straight out of the box.
Key Benefits
Ultimate Plug-and-Play Reef System – A complete Red Sea ecosystem including lighting, flow, filtration, skimmer, return pump, ATO and control panel.
Premium S-Series Construction – Deeper and wider aquarium dimensions paired with an aluminium cabinet super-structure for exceptional rigidity and long-term stability.
High-Output Lighting Coverage – Three ReefLED G2 170 units deliver powerful, evenly distributed PAR across the full S-850 footprint, ideal for SPS-dominant and mixed reefs.
Powerful Gyre Circulation – Dual ReefWave 45 pumps provide broad, reef-safe flow with silent sine-wave motors and full programmability.
Advanced Smart Automation – ReefLED, ReefWave, ReefRun, ReefMat and ReefATO+ are all managed centrally via the ReefBeat® App.
High-Capacity Filtration & Flow – The ReefMat 1200, RSK DC 900 skimmer, and ReefRun G2 12000 return pump ensure exceptional water quality and turnover for heavily stocked systems.
Silent G3 Hydrodynamic Plumbing – Redesigned return plumbing and the ReefGate precision valve deliver smooth, near-silent operation.
What’s Included (Model-Specific Equipment)
| Component | Model / Description |
|---|---|
| Lighting | 3 × ReefLED G2 170 |
| Circulation Pumps | 2 × ReefWave 45 |
| Return Pump | ReefRun G2 12000 DC return pump |
| Protein Skimmer | RSK DC 900 |
| Mechanical Filtration | ReefMat 1200 automatic filter roller |
| Top-Off System | ReefATO+ smart ATO with temperature & leak detection |
| Control & Organisation | Slide-Out Control Panel 60 |
| Smart Ecosystem | Full ReefBeat® App integration |
Technical Specifications
| Specification | Details |
|---|---|
| Total System Volume | ~850 L |
| Display Tank Volume | ~680 L |
| Sump Volume | ~170 L |
| Display Dimensions (L×W×H) | ~180 × 75 × 60 cm |
| Total System Height | ~155–160 cm |
| Front Glass | Up to 19 mm ultra-clear |
| Side Glass | Up to 19 mm ultra-clear |
| Base Glass | Up to 19 mm |
| Reinforcement | Euro-braced (G3 feature) |
| Cabinet Structure | Aluminium super-structure |
| Warranty | 3 years (extendable to 5 years) |
Who Is It For?
-
Reefkeepers building a large, high-end SPS or mixed reef aquarium
-
Hobbyists wanting maximum lighting coverage, flow and turnover
-
Aquarists prioritising automation, silence and low maintenance
-
Anyone upgrading to a flagship-level Red Sea S-Series reef system
Looking for the Reef-Ready Version?
If you’d prefer to customise your own lighting, pumps and filtration, explore the:
Red Sea Reefer S-850 G3 Aquarium
You’ll get the same premium S-Series construction, euro-bracing and G3 plumbing — with complete freedom to choose your own equipment.
Equipment Information
ReefLED G2 Lighting
The ReefLED G2 delivers a richer, more vibrant spectrum thanks to an updated chipset. Tune the lighting from 10,000K to 23,000K, with improved 470 nm blue, enhanced UV/violet, and Red Sea’s signature REEF-SPEC Blue for exceptional coral growth and fluorescence.
Key Features:
-
Stronger REEF-SPEC output
-
Enhanced UV/violet channels
-
Easy one-scale colour & intensity programming
-
ReefBeat® app control
-
Optional anti-glare visors
-
Compact 6.1 × 5.3 × 2.2 in size
ReefRun G2 DC Return Pump
Powerful, efficient, and nearly silent, the ReefRun G2 features a 180° rotating outlet, long serviceable cable, and full smart control when paired with the ReefRun Dual Controller.
Key Features:
-
Virtually silent
-
2,000–12,000 LPH range
-
180° rotating outlet
-
Energy-efficient
-
ReefBeat® integration
Reefer DC Skimmer
The Reefer DC Skimmer features self-levelling technology to prevent overskimming and maintain optimal foam levels. Smart sensors regulate skimmer output for stability and safety.
Key Features:
-
Automatic self-levelling
-
Ultra-quiet operation
-
Smart control via ReefRun Dual Controller
-
Manual neck cleaner & drain hose
-
Superior air-water contact design
ReefWave Smart Circulation Pump
Using Gyre cross-flow technology, the ReefWave creates uniform, reef-safe flow patterns with silent operation and full ReefBeat® programmability.
Key Features:
-
Silent sine-wave motor
-
Five programmable wave modes
-
Easy maintenance design
-
Built-in Wi-Fi control
ReefMat Automatic Filter Roller
The ReefMat delivers fully automated mechanical filtration, removing waste before it breaks down. Smart sensors monitor roll usage and prevent jams.
Key Features:
-
Plug-and-play installation
-
Smart roll tracking
-
Fast fleece replacement
-
Integrated media basket
-
3,500 LPH max flow
ReefATO+ Smart Top-Off System
The ReefATO+ ensures stable water levels and salinity, while also offering temperature monitoring and leak detection via the ReefBeat® App.
Slide-Out Control Panel
Made from marine-spec laminated plywood, the slide-out control panel keeps your controllers and cables organised and accessible.
Product Information
Product Information
Shipping & Returns
Shipping & Returns








Red Sea Reefer Max G3 S-850 Aquarium
Red Sea Reefer Max G3 S-850 Aquarium
Red Sea Reefer Max S-850 G3 – Premium Fully Equipped Smart Reef System
An 850 L premium, fully equipped plug-and-play reef system engineered for large, demanding reef aquariums where performance, stability, and automation are non-negotiable.
The Red Sea Reefer Max S-850 G3 represents the upper tier of the Reefer S-Series, combining extra-wide and deep display dimensions, a rigid aluminium super-structure, and Red Sea’s complete smart reef ecosystem.
Every essential component — lighting, circulation, mechanical filtration, skimming, return pump and automation — is factory-matched and seamlessly integrated through the ReefBeat® App, delivering professional-grade reefkeeping straight out of the box.
Key Benefits
Ultimate Plug-and-Play Reef System – A complete Red Sea ecosystem including lighting, flow, filtration, skimmer, return pump, ATO and control panel.
Premium S-Series Construction – Deeper and wider aquarium dimensions paired with an aluminium cabinet super-structure for exceptional rigidity and long-term stability.
High-Output Lighting Coverage – Three ReefLED G2 170 units deliver powerful, evenly distributed PAR across the full S-850 footprint, ideal for SPS-dominant and mixed reefs.
Powerful Gyre Circulation – Dual ReefWave 45 pumps provide broad, reef-safe flow with silent sine-wave motors and full programmability.
Advanced Smart Automation – ReefLED, ReefWave, ReefRun, ReefMat and ReefATO+ are all managed centrally via the ReefBeat® App.
High-Capacity Filtration & Flow – The ReefMat 1200, RSK DC 900 skimmer, and ReefRun G2 12000 return pump ensure exceptional water quality and turnover for heavily stocked systems.
Silent G3 Hydrodynamic Plumbing – Redesigned return plumbing and the ReefGate precision valve deliver smooth, near-silent operation.
What’s Included (Model-Specific Equipment)
| Component | Model / Description |
|---|---|
| Lighting | 3 × ReefLED G2 170 |
| Circulation Pumps | 2 × ReefWave 45 |
| Return Pump | ReefRun G2 12000 DC return pump |
| Protein Skimmer | RSK DC 900 |
| Mechanical Filtration | ReefMat 1200 automatic filter roller |
| Top-Off System | ReefATO+ smart ATO with temperature & leak detection |
| Control & Organisation | Slide-Out Control Panel 60 |
| Smart Ecosystem | Full ReefBeat® App integration |
Technical Specifications
| Specification | Details |
|---|---|
| Total System Volume | ~850 L |
| Display Tank Volume | ~680 L |
| Sump Volume | ~170 L |
| Display Dimensions (L×W×H) | ~180 × 75 × 60 cm |
| Total System Height | ~155–160 cm |
| Front Glass | Up to 19 mm ultra-clear |
| Side Glass | Up to 19 mm ultra-clear |
| Base Glass | Up to 19 mm |
| Reinforcement | Euro-braced (G3 feature) |
| Cabinet Structure | Aluminium super-structure |
| Warranty | 3 years (extendable to 5 years) |
Who Is It For?
-
Reefkeepers building a large, high-end SPS or mixed reef aquarium
-
Hobbyists wanting maximum lighting coverage, flow and turnover
-
Aquarists prioritising automation, silence and low maintenance
-
Anyone upgrading to a flagship-level Red Sea S-Series reef system
Looking for the Reef-Ready Version?
If you’d prefer to customise your own lighting, pumps and filtration, explore the:
Red Sea Reefer S-850 G3 Aquarium
You’ll get the same premium S-Series construction, euro-bracing and G3 plumbing — with complete freedom to choose your own equipment.
Equipment Information
ReefLED G2 Lighting
The ReefLED G2 delivers a richer, more vibrant spectrum thanks to an updated chipset. Tune the lighting from 10,000K to 23,000K, with improved 470 nm blue, enhanced UV/violet, and Red Sea’s signature REEF-SPEC Blue for exceptional coral growth and fluorescence.
Key Features:
-
Stronger REEF-SPEC output
-
Enhanced UV/violet channels
-
Easy one-scale colour & intensity programming
-
ReefBeat® app control
-
Optional anti-glare visors
-
Compact 6.1 × 5.3 × 2.2 in size
ReefRun G2 DC Return Pump
Powerful, efficient, and nearly silent, the ReefRun G2 features a 180° rotating outlet, long serviceable cable, and full smart control when paired with the ReefRun Dual Controller.
Key Features:
-
Virtually silent
-
2,000–12,000 LPH range
-
180° rotating outlet
-
Energy-efficient
-
ReefBeat® integration
Reefer DC Skimmer
The Reefer DC Skimmer features self-levelling technology to prevent overskimming and maintain optimal foam levels. Smart sensors regulate skimmer output for stability and safety.
Key Features:
-
Automatic self-levelling
-
Ultra-quiet operation
-
Smart control via ReefRun Dual Controller
-
Manual neck cleaner & drain hose
-
Superior air-water contact design
ReefWave Smart Circulation Pump
Using Gyre cross-flow technology, the ReefWave creates uniform, reef-safe flow patterns with silent operation and full ReefBeat® programmability.
Key Features:
-
Silent sine-wave motor
-
Five programmable wave modes
-
Easy maintenance design
-
Built-in Wi-Fi control
ReefMat Automatic Filter Roller
The ReefMat delivers fully automated mechanical filtration, removing waste before it breaks down. Smart sensors monitor roll usage and prevent jams.
Key Features:
-
Plug-and-play installation
-
Smart roll tracking
-
Fast fleece replacement
-
Integrated media basket
-
3,500 LPH max flow
ReefATO+ Smart Top-Off System
The ReefATO+ ensures stable water levels and salinity, while also offering temperature monitoring and leak detection via the ReefBeat® App.
Slide-Out Control Panel
Made from marine-spec laminated plywood, the slide-out control panel keeps your controllers and cables organised and accessible.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Red Sea Reefer Max S-850 G3 – Premium Fully Equipped Smart Reef System
An 850 L premium, fully equipped plug-and-play reef system engineered for large, demanding reef aquariums where performance, stability, and automation are non-negotiable.
The Red Sea Reefer Max S-850 G3 represents the upper tier of the Reefer S-Series, combining extra-wide and deep display dimensions, a rigid aluminium super-structure, and Red Sea’s complete smart reef ecosystem.
Every essential component — lighting, circulation, mechanical filtration, skimming, return pump and automation — is factory-matched and seamlessly integrated through the ReefBeat® App, delivering professional-grade reefkeeping straight out of the box.
Key Benefits
Ultimate Plug-and-Play Reef System – A complete Red Sea ecosystem including lighting, flow, filtration, skimmer, return pump, ATO and control panel.
Premium S-Series Construction – Deeper and wider aquarium dimensions paired with an aluminium cabinet super-structure for exceptional rigidity and long-term stability.
High-Output Lighting Coverage – Three ReefLED G2 170 units deliver powerful, evenly distributed PAR across the full S-850 footprint, ideal for SPS-dominant and mixed reefs.
Powerful Gyre Circulation – Dual ReefWave 45 pumps provide broad, reef-safe flow with silent sine-wave motors and full programmability.
Advanced Smart Automation – ReefLED, ReefWave, ReefRun, ReefMat and ReefATO+ are all managed centrally via the ReefBeat® App.
High-Capacity Filtration & Flow – The ReefMat 1200, RSK DC 900 skimmer, and ReefRun G2 12000 return pump ensure exceptional water quality and turnover for heavily stocked systems.
Silent G3 Hydrodynamic Plumbing – Redesigned return plumbing and the ReefGate precision valve deliver smooth, near-silent operation.
What’s Included (Model-Specific Equipment)
| Component | Model / Description |
|---|---|
| Lighting | 3 × ReefLED G2 170 |
| Circulation Pumps | 2 × ReefWave 45 |
| Return Pump | ReefRun G2 12000 DC return pump |
| Protein Skimmer | RSK DC 900 |
| Mechanical Filtration | ReefMat 1200 automatic filter roller |
| Top-Off System | ReefATO+ smart ATO with temperature & leak detection |
| Control & Organisation | Slide-Out Control Panel 60 |
| Smart Ecosystem | Full ReefBeat® App integration |
Technical Specifications
| Specification | Details |
|---|---|
| Total System Volume | ~850 L |
| Display Tank Volume | ~680 L |
| Sump Volume | ~170 L |
| Display Dimensions (L×W×H) | ~180 × 75 × 60 cm |
| Total System Height | ~155–160 cm |
| Front Glass | Up to 19 mm ultra-clear |
| Side Glass | Up to 19 mm ultra-clear |
| Base Glass | Up to 19 mm |
| Reinforcement | Euro-braced (G3 feature) |
| Cabinet Structure | Aluminium super-structure |
| Warranty | 3 years (extendable to 5 years) |
Who Is It For?
-
Reefkeepers building a large, high-end SPS or mixed reef aquarium
-
Hobbyists wanting maximum lighting coverage, flow and turnover
-
Aquarists prioritising automation, silence and low maintenance
-
Anyone upgrading to a flagship-level Red Sea S-Series reef system
Looking for the Reef-Ready Version?
If you’d prefer to customise your own lighting, pumps and filtration, explore the:
Red Sea Reefer S-850 G3 Aquarium
You’ll get the same premium S-Series construction, euro-bracing and G3 plumbing — with complete freedom to choose your own equipment.
Equipment Information
ReefLED G2 Lighting
The ReefLED G2 delivers a richer, more vibrant spectrum thanks to an updated chipset. Tune the lighting from 10,000K to 23,000K, with improved 470 nm blue, enhanced UV/violet, and Red Sea’s signature REEF-SPEC Blue for exceptional coral growth and fluorescence.
Key Features:
-
Stronger REEF-SPEC output
-
Enhanced UV/violet channels
-
Easy one-scale colour & intensity programming
-
ReefBeat® app control
-
Optional anti-glare visors
-
Compact 6.1 × 5.3 × 2.2 in size
ReefRun G2 DC Return Pump
Powerful, efficient, and nearly silent, the ReefRun G2 features a 180° rotating outlet, long serviceable cable, and full smart control when paired with the ReefRun Dual Controller.
Key Features:
-
Virtually silent
-
2,000–12,000 LPH range
-
180° rotating outlet
-
Energy-efficient
-
ReefBeat® integration
Reefer DC Skimmer
The Reefer DC Skimmer features self-levelling technology to prevent overskimming and maintain optimal foam levels. Smart sensors regulate skimmer output for stability and safety.
Key Features:
-
Automatic self-levelling
-
Ultra-quiet operation
-
Smart control via ReefRun Dual Controller
-
Manual neck cleaner & drain hose
-
Superior air-water contact design
ReefWave Smart Circulation Pump
Using Gyre cross-flow technology, the ReefWave creates uniform, reef-safe flow patterns with silent operation and full ReefBeat® programmability.
Key Features:
-
Silent sine-wave motor
-
Five programmable wave modes
-
Easy maintenance design
-
Built-in Wi-Fi control
ReefMat Automatic Filter Roller
The ReefMat delivers fully automated mechanical filtration, removing waste before it breaks down. Smart sensors monitor roll usage and prevent jams.
Key Features:
-
Plug-and-play installation
-
Smart roll tracking
-
Fast fleece replacement
-
Integrated media basket
-
3,500 LPH max flow
ReefATO+ Smart Top-Off System
The ReefATO+ ensures stable water levels and salinity, while also offering temperature monitoring and leak detection via the ReefBeat® App.
Slide-Out Control Panel
Made from marine-spec laminated plywood, the slide-out control panel keeps your controllers and cables organised and accessible.


















