Red Sea REEFER™ G3 525 Reef Aquarium

The Red Sea REEFER™ G3 525 is a premium reef-ready aquarium designed for hobbyists who want a spacious, high-performance marine system. Featuring ultra-clear euro-braced glass, an extra-fortified marine-spec cabinet with reinforced aluminium supports, a REEF-SPEC sump, redesigned high-flow plumbing and the integrated ReefATO+ smart auto top-off system, the REEFER G3 525 provides the perfect platform for building an exceptional reef aquarium. 

Fully compatible with the complete Red Sea ReefBeat® ecosystem, the REEFER G3 525 works seamlessly with ReefLED lighting, ReefRun pumps, ReefMat roller filters, ReefDose and REEFER DC Skimmers, allowing you to create a fully integrated smart reef system. 

Key Features

• Ultra-clear euro-braced glass aquarium
• Extra-fortified marine-spec cabinet with reinforced aluminium supports
• REEF-SPEC sump with ReefMat-ready filtration chamber
• Integrated ReefATO+ smart auto top-off system
• Redesigned plumbing for quieter operation
• Hydrodynamically optimised water management
• Up to 50% improved water circulation
• 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 creating a stunning mixed reef, an SPS-dominated display or a large coral showcase, the REEFER G3 525 combines outstanding build quality with intelligent water management and complete flexibility when choosing your equipment.

Its larger footprint provides excellent aquascaping opportunities while the upgraded cabinet, euro-braced aquarium and redesigned plumbing offer exceptional strength, stability and long-term reliability. 

What’s Included

• Ultra-clear euro-braced glass aquarium
• Marine-spec cabinet
• REEF-SPEC glass sump
• Complete precision plumbing system
• ReefATO+ smart auto top-off system
• Levelling feet
• Assembly instructions 

Equipment Required (Sold Separately)

• Return pump
• Protein skimmer
• Lighting
• Water circulation pumps
• Heater
• Live rock
• Marine salt
• Substrate
• RO water system (recommended)

Compatible Equipment

• Red Sea ReefLED G2 Lighting
• REEFER DC 600 Protein Skimmer
• ReefRun DC Return Pumps
• ReefMat 1200 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 or all major credit and debit cards