Red Sea Reefer S-1000 G3 - Black Cabinet

The Red Sea Reefer S-1000 G3 - Black Cabinet is a flagship 1000 litre / 264.2 gallon reef-ready aquarium and cabinet system for aquarists who want the largest REEFER-S G3 display with a black aluminum super-structure cabinet and high-capacity split sump.

Built for serious large reef installations, the S-1000 G3 includes a 210 cm euro-braced 19 mm ultra-clear glass aquarium, reinforced black aluminum cabinet, replaceable panels, slide-out control panel, split REEF-SPEC sump with main and extension sections, ReefMat-ready mechanical stage, ReefGate precision drain valve, central overflow with removable surface skimmer, curved dual returns, pre-assembled plumbing, and integrated ReefATO+ smart top-off control. This is a base REEFER-S system, so the operating equipment package is selected separately.

Red Sea REEFER S-1000 G3 Black Flagship Reef System

• Largest REEFER-S G3 platform: The S-1000 G3 gives reef keepers a 210 cm display for a true flagship reef installation.
• 1000 litre total system volume: The 264.2 gallon volume provides exceptional stability and long-term planning capacity for a mature reef.
• Black aluminum cabinet: The black super-structure gives the large system a bold professional look while supporting the long span.
• Split sump capacity: The main plus extension sump design provides major filtration flexibility for large-system equipment planning.
• Custom equipment freedom: Return pumps, lighting, skimmer, heater, wavemakers, dosing, and automation are selected separately for the intended reef.
• Showpiece reef foundation: The S-1000 is suited to advanced mixed reefs, SPS-capable systems, large LPS displays, and high-end room-divider-style reef planning against a wall.

210 cm Ultra-Clear Euro-Braced Display

• 795 litre display volume: The main aquarium provides 209.9 gallons of display space for large aquascapes, coral colonies, open swimming lanes, and showpiece fish planning.
• 210 x 68 x 65 cm dimensions: The 82.7 inch length gives unmatched space in the REEFER-S G3 lineup for multiple coral zones and long reef structures.
• 19 mm glass construction: The front, sides, bottom, and back are listed with 19 mm ultra-clear glass.
• Euro-braced design: Bracing reinforces the large aquarium while preserving a premium professional profile.
• Ultra-clear viewing: Low-iron glass helps maintain clarity across the long display and reduces colour distortion through thick panels.
• Major room presence: The S-1000 is intended for large homes, offices, showrooms, and dedicated reef spaces where the aquarium is a centerpiece.

Black Aluminum Cabinet and Slide-Out Panel

• Heavy-duty aluminum structure: The cabinet uses Red Sea’s premium aluminum super-structure for a long-span large aquarium installation.
• Replaceable black panels: Exterior panels give the system a finished black furniture look while retaining modular serviceability.
• Hidden adjustable feet: Leveling feet support careful installation on suitable flooring.
• Slide-out control panel: The panel helps organize controllers, power supplies, dosing equipment, and smart devices for a cleaner build.
• Large equipment cabinet: The cabinet provides room for split sump equipment, dual return planning, control hardware, cable routing, and long-term upgrades.
• Professional black finish: The black cabinet visually anchors the long display and keeps the reef itself as the focal point.

G3 Large-System Flow and ReefGate Control

• Optimized circulation design: REEFER-S G3 plumbing is designed for stronger, more efficient water movement through the display and sump.
• Quiet rectangular downflow: The enlarged inlet reduces turbulence and helps lower drain noise when tuned correctly.
• ReefGate precision valve: The high-precision drain valve allows fine adjustment for stable, near-silent operation.
• Surface-skimming overflow: The central overflow includes a removable surface skimmer for easier water-surface maintenance.
• Curved dual returns: Dual outlets distribute return flow across the long 210 cm aquarium and support a dual-pump strategy.
• Pre-assembled plumbing: Factory-designed plumbing gives the large system a clean and predictable installation path.

Split REEF-SPEC Sump and ReefATO+

• 205 litre sump volume: The high-capacity split sump gives extensive space for skimming, return pumps, media, reactors, dosing, probes, and future upgrades.
• Main plus extension sump: The extension section can be used for a larger refugium, frag area, extra filtration, or flexible equipment planning.
• ReefMat 1200 ready: The mechanical filtration stage includes micron socks and media cups and is designed for optional ReefMat 1200 installation.
• Integrated ReefATO+: ReefATO+ helps stabilize salinity and water level while adding temperature monitoring and leak detection.
• Advanced filtration potential: The sump layout can support automatic filtration, oversized skimming, reactors, dosing containers, and control equipment.
• Designed for serious reef systems: The S-1000 gives advanced aquarists the space and infrastructure needed for a fully featured large reef.

Red Sea Reefer S-1000 G3 Black Specifications

• Total system volume: 1000 L / 264.2 gal.
• Display volume: 795 L / 209.9 gal.
• Sump volume: 205 L / 54.1 gal.
• Display dimensions: 210 cm L x 68 cm W x 65 cm H / approx. 82.7 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: Black aluminum super-structure cabinet with replaceable panels, hidden adjustable feet, stainless hardware, and slide-out control panel.
• Filtration: Split REEF-SPEC sump with main and extension sections, mechanical chamber, micron socks, media cups, ReefMat-ready layout, and integrated ReefATO+.
• Recommended return pump: 2 x Red Sea ReefRun G2 12000, sold separately.
• Recommended lighting: 5 x Red Sea ReefLED G2 170, sold separately.
• Recommended ReefMat: Red Sea ReefMat 1200, sold separately.

Application Notes for the REEFER S-1000 G3

• Best use: Ideal for flagship mixed reefs, SPS-capable systems, large LPS displays, soft coral aquariums, and premium showpiece installations.
• Equipment planning: Plan dual return pumps, multi-fixture lighting, skimmer, heaters, wavemakers, ReefMat, dosing, and monitoring before filling.
• Lighting planning: The 210 cm length requires a coordinated multi-fixture lighting layout for even coral coverage.
• Flow planning: Dedicated wavemakers are essential for broad circulation across the long display and behind rockwork.
• 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.

Red Sea REEFER-S G3 Series Video

Setup and Installation Notes

• Assemble and level the cabinet: Build the black aluminum cabinet according to Red Sea’s instructions and confirm it is level before placing the aquarium.
• Plan the full equipment package: Select dual return pumps, skimmer, lighting, heaters, wavemakers, optional ReefMat, and controller hardware before adding water.
• Use the slide-out panel: Organize controllers, power supplies, and dosing hardware before final equipment placement.
• Install split sump and plumbing: Confirm the main sump, extension sump, overflow, ReefGate valve, returns, and ReefATO+ are correctly installed.
• Freshwater leak test: Run the entire system with freshwater before saltwater setup.
• Tune the ReefGate gradually: Adjust the valve slowly until the overflow and sump run quietly.
• Use RO/DI water: RO/DI water is recommended for salt mixing and top-off.
• Cycle before livestock: Establish biological filtration fully before adding livestock.

What’s Included

• Euro-braced 19 mm ultra-clear glass aquarium
• Black aluminum super-structure cabinet with replaceable panels, hidden adjustable feet, stainless hardware, and slide-out control panel
• Split REEF-SPEC sump with main and extension sections, 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.