Red Sea Reefer 625 G3 - Black Cabinet

Red Sea Reefer 625 G3 - Black Cabinet

The Red Sea Reefer 625 G3 - Black Cabinet is a premium 620 litre / 163.8 gallon reef-ready aquarium and cabinet system for aquarists who want a deeper 150 cm Red Sea REEFER G3 display with a black marine-spec cabinet and high-capacity sump-based infrastructure.

With a 150 cm length, 65 cm depth, and 60 cm display height, the REEFER 625 G3 provides a larger and deeper reef canvas than the 525 while preserving the custom-equipment freedom of the base REEFER line. It includes a euro-braced ultra-clear aquarium, black marine-spec plywood cabinet with front aluminum supports, REEF-SPEC sump, ReefMat-ready mechanical chamber, ReefGate precision valve, improved G3 plumbing, central overflow with removable surface skimmer, curved dual returns, and integrated ReefATO+ smart top-off control.

Red Sea REEFER 625 G3 Black Reef System

• Large deep-display reef platform: The REEFER 625 G3 adds both depth and height, creating a more spacious reef layout for aquarists who want a serious showpiece system.
• 620 litre total system volume: The 163.8 gallon system volume provides substantial stability and more flexibility for coral growth, livestock selection, nutrient management, and long-term reef planning.
• Black cabinet finish: The black cabinet gives the aquarium a bold, high-contrast display look and helps conceal the equipment area visually.
• Custom hardware freedom: Lighting, return pump, protein skimmer, heater, wavemakers, and automation are chosen separately so the build can match the intended reef style.
• Euro-braced strength: The larger G3 display uses euro-bracing and thick ultra-clear glass to support a premium large-format aquarium design.
• Ideal for advanced mixed reefs: The footprint and sump capacity make this system well suited for LPS displays, mixed reefs, soft coral systems, and carefully planned SPS-capable builds.

150 x 65 cm Euro-Braced Ultra-Clear Display

• 497 litre display volume: The main aquarium gives reef keepers a broad display area for coral colonies, open sand zones, island structures, swim-throughs, and selected reef fish.
• 65 cm front-to-back depth: The deeper footprint gives more room for layered rockwork, negative-space aquascaping, and coral placement without crowding the front glass.
• 60 cm display height: The added height increases visual presence and gives corals more vertical room to grow.
• 19 mm viewing glass: The 625 G3 is listed with 19 mm front, side, and back glass and a 15 mm bottom panel.
• Ultra-clear viewing: Low-iron glass improves clarity and coral colour presentation through the thick viewing panels.
• Clean cabinet-contained equipment: The sump and equipment are housed below the display so the reef remains visually clean.

G3 Flow Architecture and Quiet Operation

• Optimized water circulation: REEFER G3 systems use redesigned plumbing for improved circulation efficiency and stronger water movement through the system.
• Quiet downflow system: The enlarged rectangular downflow inlet helps reduce turbulence and operating noise in the overflow.
• ReefGate precision valve: The bespoke drain valve allows fine tuning of the downflow line for stable water height and near-silent sump operation.
• Surface-skimming overflow: The central overflow includes a removable surface skimmer to help clear surface film and support gas exchange.
• Curved dual returns: Improved return nozzles distribute water back into the display and provide a strong starting point for additional reef circulation.
• Pre-assembled plumbing: Factory-designed plumbing simplifies setup and gives the large system a cleaner drain and return path.

High-Capacity REEF-SPEC Sump and ReefATO+

• 123 litre sump volume: The large sump provides substantial space for skimmer selection, return equipment, mechanical filtration, media, probes, reactors, dosing, and maintenance access.
• ReefMat-ready chamber: The removable mechanical filtration compartment includes micron socks and media cups and is designed for optional Red Sea ReefMat installation.
• Integrated ReefATO+: ReefATO+ helps maintain stable sump water level and salinity while adding temperature monitoring and leak detection.
• Flexible filtration planning: The sump can support protein skimming, media reactors, carbon, refugium-style nutrient export, dosing lines, and monitoring equipment.
• Large-system maintenance access: The in-cabinet sump gives the space needed to service larger equipment more comfortably.
• Advanced reef-ready foundation: The 625 G3 gives experienced hobbyists a strong base for a high-performance Red Sea ecosystem build.

Black Cabinet with Front Aluminum Supports

• Marine-spec plywood construction: The cabinet is designed for aquarium use with leveling feet, moisture-resistant construction, stainless steel hinges, and a finished black exterior.
• Aluminum front support system: The 625 G3 uses front aluminum cabinet supports for added rigidity across the larger span.
• Strong visual contrast: The black finish frames coral colour and reef lighting while making the equipment area look less prominent.
• Room for equipment planning: The larger cabinet provides room for sump equipment, ATO hardware, controller boards, dosing lines, and future upgrades.
• Matched stand confidence: The included cabinet is designed for the aquarium footprint and avoids the risk of an unsuitable support structure.
• Polished room presentation: The black cabinet creates a professional display for homes, offices, showrooms, and dedicated aquarium rooms.

Red Sea Reefer 625 G3 Black Specifications

• Total system volume: 620 L / 163.8 gal.
• Display volume: 497 L / 131.2 gal.
• Sump volume: 123 L / 32.5 gal.
• Display dimensions: 150 cm L x 65 cm W x 60 cm H / approx. 59.1 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, 15 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, ReefMat-ready layout, and ReefATO+.
• Recommended return pump: Red Sea ReefRun G2 12000, sold separately.
• Lighting: Sold separately and should be selected for full 150 cm x 65 cm reef coverage.

Application Notes for the REEFER 625 G3

• Best use: Ideal for larger mixed reefs, LPS systems, soft coral displays, SPS-capable builds, and customers wanting a deep large-format reef-ready platform.
• Equipment planning: Add lighting, return pump, skimmer, heater, wavemakers, and testing equipment before setup and cycling.
• Flow planning: A tank this deep benefits from planned wavemaker placement to move water behind rockwork and across coral zones.
• Lighting planning: Choose lights for both the 150 cm length and 65 cm depth so coral coverage remains even across the aquascape.
• Filtration upgrade path: The large ReefMat-ready sump gives a practical path toward automatic mechanical filtration and more advanced nutrient control.
• Not included: Lighting, return pump, protein skimmer, heater, wavemakers, livestock, rock, sand, salt, optional ReefMat, dosing equipment, and test kits are sold separately unless otherwise stated.