Red Sea Reefer 750 G3 - Black Cabinet

Red Sea Reefer 750 G3 - Black Cabinet

The Red Sea Reefer 750 G3 - Black Cabinet is a premium 750 litre / 198.1 gallon reef-ready aquarium and cabinet system for aquarists who want the largest classic REEFER G3 platform with a 180 cm euro-braced ultra-clear display and black marine-spec cabinet.

This flagship-size base REEFER G3 system provides the tank, cabinet, sump infrastructure, extension sump, plumbing, overflow, ReefGate precision drain control, ReefMat-ready mechanical filtration, and integrated ReefATO+ smart top-off foundation while leaving the final equipment package open for custom selection. It is built for serious reef keepers planning a large mixed reef, showpiece coral display, SPS-capable system, or premium long-format aquarium where lighting, flow, skimming, return pumps, dosing, and automation need to be chosen intentionally.

Red Sea REEFER 750 G3 Black Reef System

• Largest classic REEFER G3 model: The 750 G3 is the largest system in the standard REEFER G3 family, giving reef keepers a major display footprint without moving into the REEFER-S line.
• 180 cm reef display: The long aquarium provides excellent room for fish movement, multiple coral zones, large aquascape structures, and more natural reef proportions.
• 750 litre total system volume: The 198.1 gallon water volume supports high stability, more equipment planning flexibility, and a stronger foundation for mature coral growth.
• Black cabinet finish: The black cabinet creates a bold showpiece presentation and keeps the focus on coral colour, lighting, and aquascape structure.
• Base-system freedom: Return pumps, lighting, skimmer, heater, wavemakers, dosing, and automation are selected separately for a tailored large reef build.
• Dual-return planning: The 750 is designed around a dual-return configuration, making flow and return-pump planning especially important before setup.

180 cm Euro-Braced Ultra-Clear Display

• 600 litre display volume: The main display gives reef keepers a substantial canvas for larger coral colonies, showpiece aquascapes, and carefully selected reef fish.
• 180 x 65 x 60 cm dimensions: The long 180 cm length, broad 65 cm depth, and 60 cm height create a dramatic display with real room for layered reef structure.
• 19 mm glass specification: The REEFER 750 G3 is listed with 19 mm front, side, bottom, and back glass.
• Euro-braced large-system strength: The braced construction supports the large footprint while keeping the top profile clean and professional.
• Ultra-clear viewing panels: Low-iron glass improves viewing clarity across the long display and helps coral colours look cleaner.
• Flagship room presence: The 750 G3 has the visual impact needed for large living rooms, offices, showrooms, and dedicated reef installations.

G3 Dual-Return Water Management

• Hydrodynamically improved plumbing: The G3 water-management system is designed for better circulation efficiency and higher-performing movement through the aquarium and sump.
• Quiet rectangular downflow: The enlarged downflow inlet helps reduce turbulence in the overflow for quieter operation.
• ReefGate precision control: The bespoke gate valve allows fine adjustment of the main drain to stabilize water level and reduce drain noise.
• Surface-skimming overflow: The central overflow includes a removable surface skimmer for easier maintenance and cleaner water-surface management.
• Dual return layout: The 750 uses a dual-return approach for better distribution across the long display when matched with appropriate return equipment.
• Factory-designed plumbing: Pre-assembled plumbing gives the large system a clean, organized water path and reduces the uncertainty of custom plumbing.

Large Sump System and ReefATO+ Control

• 150 litre sump volume: The high-capacity sump provides extensive space for skimming, mechanical filtration, media, reactors, dosing lines, probes, return equipment, and maintenance access.
• Glass extension sump included: The REEFER 750 G3 includes a glass extension sump, giving this flagship model additional sump flexibility compared with smaller REEFER G3 systems.
• ReefMat-ready filtration: The removable mechanical chamber includes micron socks and media cups and is ready for optional automatic fleece-roll filtration.
• Integrated ReefATO+: ReefATO+ helps stabilize sump water level and salinity while adding temperature monitoring and leak detection.
• Advanced filtration planning: The large sump footprint supports a wide range of protein skimmers, media reactors, nutrient-export methods, and controller layouts.
• Built for serious reef equipment: The 750 G3 gives advanced aquarists the space and infrastructure needed for a fully featured large reef system.

Black Cabinet with Aluminum Support Structure

• Marine-spec plywood cabinet: The black cabinet is built for aquarium use with moisture-resistant construction, leveling feet, stainless steel hinges, and a finished exterior.
• Front aluminum supports: Red Sea reinforces 525 models and above with front aluminum cabinet supports, especially important for long-span systems like the 750.
• Large equipment area: The cabinet gives room for sump equipment, dual return planning, dosing containers, controller hardware, and future upgrades.
• High-contrast display look: The black finish visually anchors the 180 cm aquarium and makes reef lighting and coral colour stand out.
• Matched structural fit: The included stand is designed for the aquarium footprint and loaded system weight.
• Professional presentation: The black 750 G3 is well suited to serious home reefs, display installations, offices, and customer-facing environments.

Red Sea Reefer 750 G3 Black Specifications

• Total system volume: 750 L / 198.1 gal.
• Display volume: 600 L / 158.5 gal.
• Sump volume: 150 L / 39.6 gal.
• Display dimensions: 180 cm L x 65 cm W x 60 cm H / approx. 70.9 x 25.6 x 23.6 in.
• Total height with cabinet: 148 cm / approx. 58.3 in.
• Glass thickness: 19 mm front glass, 19 mm side glass, 19 mm bottom glass, and 19 mm back glass.
• Display format: Euro-braced ultra-clear glass aquarium.
• Cabinet: Black marine-spec plywood cabinet with leveling feet and front aluminum supports.
• Filtration: REEF-SPEC sump with mechanical chamber, micron socks, media cups, glass extension sump, ReefMat-ready layout, and ReefATO+.
• Recommended return pump: Dual returns with 2 x Red Sea ReefRun G2 12000, sold separately.
• Lighting: Sold separately and should be selected for full 180 cm x 65 cm reef coverage.

Application Notes for the REEFER 750 G3

• Best use: Ideal for large mixed reefs, SPS-capable systems, LPS coral displays, soft coral aquariums, and showpiece reef installations.
• Equipment planning: Choose dual return pumps, lighting, skimmer, heater, wavemakers, dosing equipment, and controller hardware before filling the system.
• Lighting planning: The 180 cm length and 65 cm depth require a multi-fixture lighting plan for even coral coverage.
• Flow planning: Dedicated wavemakers are essential for reef circulation beyond the dual return system, especially in SPS or dense mixed reefs.
• Filtration planning: The large sump and extension sump provide strong flexibility for skimming, roller filtration, media, probes, dosing, and nutrient export.
• Not included: Lighting, return pumps, protein skimmer, heater, wavemakers, livestock, rock, sand, salt, optional ReefMat, dosing equipment, and test kits are sold separately unless otherwise stated.