Red Sea REEFER 750 G3+ Aquarium & Cabinet

The Red Sea REEFER 750 G3+ Marine Aquarium is a large, reef-ready aquarium system combining a 600 litre display tank with a 150 litre in-cabinet sump, providing a total system water volume of 750 litres. Featuring an impressive 180 cm wide display with a 65 cm front-to-back depth, this marine aquarium provides extensive space for larger aquascapes, coral colonies and open swimming areas for marine fish, while allowing you to select your own lighting, filtration and circulation equipment.

Part of the Red Sea REEFER G3+ range, the aquarium features ultra-clear glass, elegant jet-black eurobracing and high-quality euro-silicone bonding. The 19 mm thick front, side and bottom glass panels provide substantial structural strength, while additional bottom bracing reinforces the aquarium. The wide display and clear glass construction allow uninterrupted viewing of your fish, corals and rockwork.

The aquarium is supported by a reinforced marine-spec plywood cabinet featuring laminated panels, epoxy-painted doors, stainless-steel hinges and adjustable levelling feet. Additional front aluminium supports strengthen the cabinet structure, while the enclosed design keeps the sump, plumbing and filtration equipment housed beneath the display for a clean, furniture-style appearance.

The improved G3+ water-management system incorporates hydrodynamic piping, an enlarged downflow inlet and the ReefGate high-precision gate valve. The adjustable valve allows accurate regulation of water flow through the overflow, helping reduce turbulence and operating noise when balanced with a suitable return pump. Removable surface-skimming combs also provide convenient access for routine cleaning and maintenance.

The REEFER 750 G3+ features two 32 mm return outlets, supporting either single- or dual-pump plumbing configurations. These larger return connections provide flexibility when selecting suitable return pumps and planning water circulation between the display aquarium and sump.

The integrated 150 litre sump provides dedicated space for essential filtration equipment, including an adjustable-height protein skimmer chamber with an operating water depth of 21–27 cm. The mechanical filtration section includes two filter socks and two media cups, while the removable compartment allows installation of a compatible ReefMat automatic roller filter as an optional upgrade.

The refugium-ready sump layout also provides the option to incorporate a refugium into your filtration system. This offers additional flexibility for biological filtration and nutrient management, with space to configure equipment around the requirements of a larger marine aquarium.

The REEFER 750 G3+ includes ReefControl Pro with an automatic top-off (ATO) module. The system automatically replenishes freshwater lost through evaporation, helping maintain a consistent aquarium water level and salinity. Integrated temperature monitoring provides useful information for everyday aquarium management.

ReefControl Pro supports up to seven compatible ReefSense probes or sensors and two 12 V DC devices. Optional ReefSense accessories and ReefControl Power can be added to expand monitoring and control capabilities as your aquarium develops.

Key Features:

• 750 Litre Reef Aquarium System: Combines a 600 litre display aquarium with a 150 litre in-cabinet sump.
• Impressive 180 cm Display: Provides extensive room for larger aquascapes, coral colonies and swimming areas for marine fish.
• 65 cm Front-to-Back Depth: Offers additional space for creating layered rockwork and open swimming areas.
• Ultra-Clear Glass Construction: High-clarity glass panels with jet-black eurobracing and high-quality euro-silicone bonding.
• 19 mm Glass Panels: Thick front, side and bottom glass panels with additional bottom bracing for structural reinforcement.
• Reinforced Marine-Spec Cabinet: Plywood construction with laminated panels, epoxy-painted doors, stainless-steel hinges and adjustable levelling feet.
• Additional Aluminium Supports: Front aluminium supports provide further cabinet reinforcement.
• ReefGate Precision Valve: Allows accurate adjustment of the aquarium downflow to help maintain quieter operation.
• Improved Overflow System: Hydrodynamic piping and an enlarged downflow inlet help minimise water turbulence.
• Removable Surface-Skimming Combs: Provide easier access for cleaning and maintenance.
• Dual Return Outlets: Two 32 mm return outlets support single- or dual-pump configurations.
• Integrated 150 Litre Sump: Provides dedicated space for filtration equipment beneath the aquarium.
• Adjustable Skimmer Chamber: Operating water depth can be adjusted between 21 and 27 cm to accommodate compatible protein skimmers.
• Refugium-Ready Sump: Allows the addition of a refugium for supplementary biological filtration and nutrient management.
• ReefMat-Ready Filtration: Removable mechanical filtration compartment allows installation of a compatible automatic roller filter.
• Mechanical Filtration Included: Supplied with two filter socks and two media cups.
• ReefControl Pro: Included controller provides automatic top-off functionality and temperature monitoring.
• Automatic Freshwater Top-Off: Replaces evaporated freshwater to help maintain stable water levels and salinity.
• Expandable Monitoring: Supports up to seven ReefSense probes or sensors and two 12 V DC devices, with optional accessories available.
• Flexible Equipment Selection: Allows you to choose compatible lighting, return pumps, circulation pumps and protein skimmers to suit your aquarium.
• Extended Warranty Available: Three-year manufacturer warranty, extendable to five years with registration within 90 days, subject to Red Sea's terms.

The Red Sea REEFER 750 G3+ provides a substantial foundation for creating a large marine reef aquarium. With its 180 cm ultra-clear glass display, reinforced cabinet, integrated refugium-ready sump, dual return outlets and ReefControl Pro automatic top-off system, it offers the essential components for establishing a reef while giving you the freedom to select additional equipment that meets your lighting, filtration and circulation requirements.

Specifications:

• Model: REEFER 750 G3+
• Aquarium Type: Marine reef aquarium with in-cabinet sump
• Total System Water Volume: 750 litres
• Display Tank Volume: 600 litres
• Sump Volume: 150 litres
• Display Dimensions (L x W x H): 180 x 65 x 60 cm
• Total System Height: 148 cm
• Front Glass Thickness: 19 mm
• Side Glass Thickness: 19 mm
• Bottom Glass Thickness: 19 mm
• Glass Construction: Ultra-clear glass with euro-silicone bonding
• Bracing: Jet-black eurobracing with additional bottom bracing
• Cabinet Construction: Marine-spec plywood with front aluminium supports
• Cabinet Features: Laminated panels, epoxy-painted doors, stainless-steel hinges and adjustable levelling feet
• Overflow System: Hydrodynamic piping with ReefGate precision gate valve
• Return Outlets: 2 x 32 mm (single or dual pump)
• Skimmer Chamber Footprint: 63 x 51 cm
• Return Pump Chamber Footprint: 44 x 27 cm
• Sump Operating Water Height: 21–27 cm
• Refugium-Ready Sump: Yes
• Split Sump: No
• Mechanical Filter Socks: 2
• Media Cups: 2
• Slide-Out Control Panel: Not included
• Manufacturer Warranty: 3 years, extendable to 5 years with registration within 90 days, subject to terms

Included Equipment:

• Aquarium: 1 x REEFER 750 G3+ ultra-clear glass display tank
• Cabinet: 1 x reinforced marine-spec plywood aquarium cabinet with front aluminium supports
• Filtration Sump: 1 x 150 litre refugium-ready in-cabinet sump
• Plumbing: G3+ hydrodynamic pipework with ReefGate precision gate valve
• Mechanical Filtration: 2 x filter socks
• Filter Media Cups: 2 x media cups
• Monitoring Controller: ReefControl Pro
• Automatic Top-Off: ReefControl ATO module
• Temperature Monitoring: Integrated with ReefControl Pro
• Controller Capacity: Up to 7 ReefSense probes or sensors and 2 x 12 V DC devices

Please Note: Lighting, return pump, circulation pumps, protein skimmer and ReefMat automatic roller filter are not included with the standard REEFER 750 G3+ system and are available separately.