Red Sea Reefer S-550 G3 - White Cabinet

The Red Sea Reefer S-550 G3 - White Cabinet is a premium 549 litre / 145.0 gallon reef-ready aquarium and cabinet system that combines Red Sea’s higher-end REEFER-S G3 infrastructure with a bright white aluminum super-structure cabinet.

Designed for aquarists who want a serious custom reef foundation with deeper aquascaping space, thick euro-braced glass, a rigid aluminum stand system, and smart water-level stability, the REEFER S-550 G3 includes a 19 mm ultra-clear glass aquarium, white aluminum cabinet frame with replaceable panels, slide-out control panel, REEF-SPEC sump, ReefMat-ready mechanical filtration chamber, ReefGate precision drain valve, central overflow with removable surface skimmer, curved dual returns, pre-assembled plumbing, and integrated ReefATO+ smart top-off control. It is a premium base system for reef keepers who want to choose their own lighting, return pump, skimmer, flow, heating, and automation equipment separately.

Red Sea REEFER S-550 G3 White Reef System

• Premium REEFER-S foundation: The S-550 G3 gives hobbyists the upgraded REEFER-S cabinet, display, sump, and plumbing infrastructure in a practical 120 cm format.
• 549 litre total system volume: The system offers 145 gallons of total water volume, giving reef keepers a stable platform for a carefully planned mixed reef or coral-focused display.
• White aluminum cabinet finish: The white cabinet creates a bright, modern, furniture-style look while still using the rigid aluminum super-structure design of the REEFER-S line.
• Deeper display proportions: The 68 cm width gives substantially more aquascaping room than narrower 120 cm aquariums, making the reef look more natural and less flat.
• Base-system customization: Return pump, lighting, skimmer, heater, wavemakers, dosing system, and control equipment are selected separately for a build that matches the customer’s livestock and coral plan.
• High-end Red Sea ecosystem path: The S-550 G3 is well suited to optional ReefRun, ReefLED, ReefMat, ReefWave, ReefDose, REEFER skimmer, and ReefBeat-connected equipment.

Ultra-Clear Euro-Braced Display with 68 cm Depth

• 448 litre display volume: The main display provides 118.4 gallons of aquarium space for coral colonies, rock structures, reef-safe fish, and a more developed aquascape.
• 120 x 68 x 65 cm display size: The S-550 footprint gives strong front-to-back depth and display height, creating more room for caves, ledges, sloped aquascapes, and open swimming zones.
• 19 mm ultra-clear glass: The front, sides, bottom, and back are listed with 19 mm glass for a substantial premium display build.
• Euro-braced design: The bracing supports the larger display while preserving a clean, professional aquarium profile.
• Low-iron clarity: Ultra-clear glass improves the appearance of coral colour and fish movement by reducing the tint seen in standard glass.
• Ideal reefscape depth: The 68 cm front-to-back dimension gives hobbyists room to build negative-space layouts, island reefs, mixed coral gardens, and more natural reef structure.

White Aluminum Cabinet and Control Panel Access

• Rigid aluminum super-structure: The REEFER-S cabinet is built around an aluminum support structure for a premium large-system installation.
• Replaceable cabinet panels: The white exterior panels create a clean modern finish while remaining part of a replaceable-panel cabinet design.
• Hidden adjustable feet: Leveling feet help support correct installation on suitable flooring while keeping the cabinet exterior clean.
• Slide-out control panel: The integrated control panel gives customers a cleaner mounting location for controllers, power bricks, and smart reef hardware.
• Stainless hardware: Stainless hardware supports durability in the humid environment around a marine aquarium cabinet.
• Bright display presentation: The white finish visually lightens the system and pairs well with contemporary homes, offices, showrooms, and clean modern interiors.

G3 Flow System and ReefGate Precision Valve

• Improved G3 water movement: The REEFER-S G3 water-management design is built to improve flow efficiency through the overflow, sump, and return path.
• Quiet rectangular downflow: The enlarged downflow inlet helps reduce turbulence and supports quiet operation once tuned.
• ReefGate drain control: The precision valve allows fine adjustment of the downflow line so the overflow and sump can run with a stable water level and reduced drain noise.
• Surface-skimming overflow: The central overflow includes a removable surface skimmer to help remove surface film and improve water-surface clarity.
• Curved dual return nozzles: Dual curved returns help distribute water more effectively into the display and complement dedicated wavemaker circulation.
• Pre-assembled plumbing kit: Included plumbing helps simplify installation and keeps the drain and return system organized below the aquarium.

REEF-SPEC Sump and Smart ReefATO+

• 101 litre sump capacity: The sump provides room for a high-performance skimmer, return equipment, media, dosing lines, probes, reactors, and future filtration upgrades.
• ReefMat-ready mechanical chamber: The sump includes micron socks and media cups and is designed for optional Red Sea ReefMat installation.
• Recommended ReefMat 1200 upgrade: The optional ReefMat 1200 is the natural mechanical-filtration upgrade path for customers who want automatic fleece-roll filtration.
• Integrated ReefATO+: ReefATO+ helps maintain water level and salinity stability while adding temperature monitoring and leak detection in the ReefBeat ecosystem.
• Flexible filtration layout: The sump supports carbon, reactors, refugium-style nutrient export, protein skimming, dosing equipment, and monitoring accessories.
• Service-friendly equipment area: The aluminum cabinet and sump layout provide practical access for routine maintenance, equipment cleaning, and future upgrades.

Red Sea Reefer S-550 G3 White Specifications

• Total system volume: 549 L / 145.0 gal.
• Display volume: 448 L / 118.4 gal.
• Sump volume: 101 L / 26.7 gal.
• Display dimensions: 120 cm L x 68 cm W x 65 cm H / approx. 47.2 x 26.8 x 25.6 in.
• Total height with cabinet: 153 cm / approx. 60.2 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: White aluminum super-structure cabinet with replaceable panels, hidden adjustable feet, stainless hardware, and slide-out control panel.
• Filtration: REEF-SPEC sump with mechanical chamber, micron socks, media cups, ReefMat-ready layout, and integrated ReefATO+.
• Recommended return pump: Red Sea ReefRun G2 8000, sold separately.
• Recommended lighting: 2 x Red Sea ReefLED G2 170, sold separately.
• Recommended ReefMat: Red Sea ReefMat 1200, sold separately.

Application Notes for the REEFER S-550 G3 White

• Best use: Ideal for premium mixed reefs, LPS coral displays, soft coral systems, SPS-capable builds with proper equipment, and custom Red Sea ecosystem installations.
• Equipment planning: Add a suitable return pump, reef lighting, skimmer, heater, wavemakers, testing equipment, and optional automation before cycling the aquarium.
• Lighting planning: The 120 cm length and 68 cm depth should be covered with reef lighting chosen for coral type, aquascape height, spread, and intensity goals.
• Flow planning: Dedicated wavemakers are recommended to move water through the full display depth and around rockwork beyond sump return flow.
• Control-panel advantage: The slide-out control panel is useful for keeping controllers and power hardware organized in a clean high-end installation.
• 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.

Red Sea REEFER-S G3 Series Video

Setup and Installation Notes

• Assemble and level the cabinet: Build the white aluminum cabinet according to Red Sea’s instructions and confirm the system is level before placing the aquarium.
• Plan the equipment layout: Choose the return pump, skimmer, heater, lighting, wavemakers, optional ReefMat, controller hardware, and dosing equipment before filling.
• Use the slide-out control panel: Plan controller and power-supply placement early so the panel remains organized and serviceable.
• Install plumbing carefully: Confirm the overflow, downflow, ReefGate valve, return plumbing, sump, and ReefATO+ components are installed correctly.
• Freshwater leak test: Run the tank and sump with freshwater before final saltwater setup to verify plumbing, sump level, and return flow.
• Tune the ReefGate slowly: Adjust the valve in small increments until the overflow and sump run quietly and consistently.
• Use RO/DI water: RO/DI water is recommended for saltwater mixing and evaporation top-off.
• Cycle before stocking: Establish biological filtration before adding livestock, then stock gradually for long-term reef stability.

What’s Included

• Euro-braced 19 mm ultra-clear glass aquarium
• White aluminum super-structure cabinet with replaceable panels, hidden adjustable feet, stainless hardware, and slide-out control panel
• REEF-SPEC sump with mechanical chamber, micron socks, and media cups
• Pre-assembled downflow and return plumbing with ReefGate precision valve
• Central overflow with removable surface skimmer
• Curved dual return nozzles
• Integrated ReefATO+ sensors and controller

Shipping Notes

• This item is exempt from our free shipping policy.
• To avoid delays, please order Red Sea aquariums by themselves. If you are wishing to order multiple things, please place two separate orders: one for the aquarium and one for the rest of your products.
• Please call for a shipping quote if ordering from NWT, YK, or NUN.
• All Red Sea aquariums are brought in and shipped out on an as-ordered basis. The average turn-around time to ship an aquarium to you is two business days, except where noted below.
• All shipments outside of the Vancouver area are shipped via trucking company with residential and power tailgate delivery, and are fully insured.
• Tanks ordered within BC and, in some circumstances, Alberta may take an extra 5-10 business days to process. Systems ordered from Alberta and east of there usually ship within two business days direct from the distributor in Ontario.
• If you are ordering for pick-up from our store, please select in-store pickup to avoid delivery charges. You will be notified when the tank arrives, usually within 5-10 business days.
• Red Sea Max S Series aquariums are always special order and will take from 3-6 weeks to ship.
• Please note the freight company is only responsible for getting the aquarium to the destination address and off-loading it. They are not responsible for carrying it inside.
• All freight charges have been greatly subsidized to help you get up and running with your new Red Sea system.