Red Sea REEFER™ G3 350 Reef Aquarium

The Red Sea REEFER™ G3 350 is a premium reef-ready aquarium designed for hobbyists who want to create a stunning, high-performance marine aquarium. Featuring ultra-clear rimless glass, a reinforced marine-spec cabinet, a REEF-SPEC sump, redesigned high-flow plumbing and the integrated ReefATO+ smart auto top-off system, it provides the perfect foundation for a thriving reef ecosystem. 

With a 273-litre display aquarium and a 342-litre total system volume, the REEFER G3 350 offers generous space for creative aquascaping, vibrant coral growth and an impressive selection of marine fish. Measuring 120 × 50 × 53 cm (L × W × H) with an overall system height of 140 cm, it strikes the perfect balance between display size and practicality. 

Fully compatible with the complete Red Sea ReefBeat® ecosystem, it integrates seamlessly with ReefLED G2 lighting, ReefRun DC return pumps, ReefMat roller filters, ReefDose and REEFER DC protein skimmers, allowing you to build a fully connected smart reef aquarium. 

Key Features

• Ultra-clear rimless glass aquarium
• Reinforced marine-spec cabinet
• REEF-SPEC glass sump with ReefMat-ready filtration chamber
• Integrated ReefATO+ smart auto top-off system
• Redesigned plumbing for quieter operation and improved flow
• Hydrodynamically optimised water management
• Fully compatible with the complete ReefBeat ecosystem
• Available in Black or White
• Up to 5-year extended warranty when registered with Red Sea 

Why You’ll Love It

Whether you’re upgrading your current reef or building your dream marine aquarium, the REEFER G3 350 delivers exceptional build quality, intelligent water management and complete flexibility when choosing your equipment.

Its spacious footprint provides excellent aquascaping opportunities, while the premium cabinet, ultra-clear glass and redesigned filtration system create a stable, reliable environment capable of supporting everything from soft corals and LPS to demanding SPS reef systems. 

What’s Included

• Ultra-clear rimless glass aquarium
• Reinforced marine-spec cabinet
• REEF-SPEC glass sump
• Complete precision plumbing system
• Integrated ReefATO+ smart auto top-off system
• Filter socks and media cups
• Levelling feet
• Assembly instructions 

Equipment Required (Sold Separately)

To complete your REEFER™ G3 350, you’ll also need:

• Return pump
• Protein skimmer
• LED lighting
• Water circulation pumps (wavemakers)
• Heater
• Live rock
• Marine substrate
• Marine salt
• RO/DI water system (recommended)
• Test kits and water treatments

Compatible Equipment

• Red Sea ReefLED G2 170 Lighting
• REEFER DC 300 Protein Skimmer
• ReefRun DC Return Pumps
• ReefMat 500 Roller Filter
• ReefWave Pumps
• ReefDose
• ReefCan 

Delivery

🚚 Free UK Mainland Delivery
📦 Direct from Red Sea or Out of the Blue Marines
🛡 Official Red Sea Manufacturer’s Warranty
💳 Pay securely with Klarna, Shop Pay, PayPal, Apple Pay and all major credit & debit cards