Red Sea REEFER™ G3 250 Reef Aquarium

The Red Sea REEFER™ G3 250 is a premium reef-ready aquarium designed for hobbyists who want complete freedom to build their ideal marine system. Featuring ultra-clear rimless glass, a marine-spec cabinet, a REEF-SPEC sump, hydrodynamically optimised plumbing, and the integrated ReefATO+ smart auto top-off system, the REEFER G3 250 provides the perfect foundation for a thriving reef aquarium. It is fully compatible with the Red Sea ReefBeat ecosystem, including ReefRun pumps, ReefMat, ReefLED lighting, ReefDose and REEFER DC Skimmers. 

Key Features

• Ultra-clear rimless glass aquarium
• Reinforced marine-spec cabinet
• REEF-SPEC 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
• 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 first premium marine aquarium, the REEFER G3 250 offers exceptional build quality, intelligent water management and complete flexibility when choosing your equipment. Every detail has been designed to create a stable, easy-to-maintain reef system capable of supporting everything from soft corals to demanding SPS displays. 

What’s Included

• Ultra-clear glass aquarium
• Marine-spec cabinet
• REEF-SPEC sump
• Complete plumbing kit
• ReefATO+ smart ATO system
• Levelling feet
• Assembly instructions 

Compatible Equipment

• Red Sea ReefLED G2 Lighting
• REEFER DC Skimmers
• ReefRun DC Return Pumps
• ReefMat Roller Filters
• ReefWave Pumps
• ReefDose
• ReefCan

Delivery

• 🚚 Free UK Mainland Delivery
• 📦 Direct from Red Sea or Out of the Blue Marines
• 🛡 Manufacturer’s Warranty
• 💳 Klarna, Shop Pay, PayPal & Apple Pay available