Red Sea Reefer Peninsula 500 G3 - White Cabinet

The Red Sea Reefer Peninsula 500 G3 - White Cabinet is a premium 519 litre / 137.0 gallon reef-ready peninsula aquarium system that pairs Red Sea’s larger three-sided display format with a bright white marine-spec cabinet.

Designed for customers who want a larger room-divider reef aquarium without moving into the oversized REEFER-S Peninsula sizes, the Peninsula 500 G3 delivers a 125 cm euro-braced ultra-clear display, REEF-SPEC sump, ReefMat-ready mechanical chamber, ReefGate precision valve, central surface-skimming overflow, curved dual side return nozzles, pre-assembled plumbing, and integrated ReefATO+ smart top-off control. This is a base REEFER Peninsula system, so lighting, return pump, protein skimmer, heater, wavemakers, optional ReefMat, livestock, rock, sand, and salt are selected separately.

Red Sea REEFER Peninsula 500 G3 White Reef System

• Larger room-divider reef platform: The Peninsula 500 G3 gives aquarists a longer 125 cm display that works beautifully as a room divider, central display, or open-concept reef feature.
• Three-sided viewing experience: The display is designed to be enjoyed from both long sides and the end panel, creating a more architectural reef presentation.
• 137 gallon total system volume: The 519 L volume provides strong stability and more planning flexibility than smaller peninsula systems.
• White cabinet finish: The white marine-spec cabinet creates a clean, bright, modern display that pairs well with contemporary interiors.
• Custom equipment selection: Return pump, lighting, skimmer, heater, wavemakers, dosing, control, and optional filtration upgrades can be selected to suit the reef plan.
• G3 infrastructure package: Optimized plumbing, quiet downflow, ReefGate valve, dual side returns, ReefATO+, and a ReefMat-ready sump are built into the system foundation.

Euro-Braced Ultra-Clear Peninsula Display

• 412 litre display volume: The main aquarium provides 108.8 gallons of space for a larger aquascape, coral colonies, open sand, and carefully chosen reef fish.
• 125 x 63.5 x 60 cm dimensions: The longer footprint gives more room for island layouts, long reef structures, swim-throughs, and visible aquascaping depth.
• 15 mm glass panels: The Peninsula 500 G3 is listed with 15 mm front, side, bottom, and back glass.
• Euro-braced design: The larger display uses euro-bracing for added rigidity while maintaining a clean premium profile.
• Ultra-clear glass: Low-iron glass improves clarity and reduces tint so the reef looks cleaner from multiple viewing angles.
• Built for balanced aquascapes: Rockwork should be planned as a central reef structure rather than a one-sided wall, so the display looks finished from every side.

G3 Flow System and ReefGate Control

• Hydrodynamically optimized water path: Red Sea’s G3 plumbing supports efficient movement through the overflow, sump, and return system.
• Quiet rectangular downflow: The low-turbulence drain inlet helps reduce operating noise when properly tuned.
• ReefGate precision valve: The drain line can be adjusted in small increments for stable, near-silent sump operation.
• Surface-skimming overflow: The central overflow includes a removable surface skimmer to help manage surface film and clarity.
• Curved dual side returns: The return nozzles help move water along the long peninsula display and support better flow distribution.
• Pre-assembled plumbing: Included downflow and return plumbing gives the system a clean factory-designed water path.

REEF-SPEC Sump and ReefATO+ Control

• 106.6 litre sump volume: The sump offers useful space for mechanical filtration, skimmer selection, return equipment, media, probes, and dosing lines.
• ReefMat-ready mechanical chamber: Micron socks and media cups are included, and the chamber is designed for optional Red Sea ReefMat use.
• Recommended ReefMat 500: The optional ReefMat 500 is the natural roller-filter upgrade path for this model.
• Integrated ReefATO+: ReefATO+ helps stabilize water level and salinity while adding temperature monitoring and leak detection.
• Flexible filtration choices: The sump can support skimming, carbon, media reactors, probes, dosing equipment, and future reef automation.
• Clean three-sided display: The cabinet sump keeps support equipment out of the visible aquascape so the room-divider display remains uncluttered.

Red Sea Reefer Peninsula 500 G3 White Specifications

• Total system volume: 519 L / 137.0 gal.
• Display volume: 412 L / 108.8 gal.
• Sump volume: 106.6 L / 28.1 gal.
• Display dimensions: 125 cm L x 63.5 cm W x 60 cm H / approx. 49.2 x 25.0 x 23.6 in.
• Total height with cabinet: 160 cm / approx. 63.0 in.
• Glass thickness: 15 mm front glass, 15 mm side glass, 15 mm bottom glass, and 15 mm back glass.
• Display format: Euro-braced ultra-clear peninsula aquarium.
• Cabinet: White marine-spec plywood cabinet with leveling feet.
• 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 500, sold separately.

Application Notes for the Peninsula 500 G3 White

• Best use: Ideal for room-divider aquariums, larger mixed reefs, LPS displays, soft coral systems, and open-concept reef installations.
• Equipment planning: Add return pump, lighting, skimmer, heater, wavemakers, optional ReefMat, test kits, and any automation before cycling.
• Lighting planning: The recommended ReefLED G2 170 fixtures are sold separately and should be positioned for even coverage across the long peninsula layout.
• Flow planning: Dedicated wavemakers are recommended for broad reef circulation beyond the dual side returns.
• Installation planning: Allow space for glass cleaning, cabinet access, sump maintenance, and safe movement around the exposed viewing sides.
• 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 Peninsula G3 Series Video

Setup and Installation Notes

• Confirm placement first: Plan the peninsula location carefully so the tank can be viewed, cleaned, and serviced from the correct sides.
• Assemble and level the cabinet: Build the white cabinet according to Red Sea’s instructions and confirm it is level before placing the aquarium.
• Select equipment before filling: Choose return pump, skimmer, lighting, heater, wavemakers, optional ReefMat, and controller layout before adding water.
• Install plumbing carefully: Confirm the overflow, downflow, ReefGate valve, return plumbing, sump, and ReefATO+ are installed correctly.
• Leak test with freshwater: Run the system with freshwater before final saltwater setup to verify plumbing and sump operation.
• Tune the ReefGate slowly: Make small valve adjustments 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 fish or corals, then stock gradually for long-term stability.

What’s Included

• Euro-braced ultra-clear peninsula aquarium
• White marine-spec plywood cabinet with leveling feet
• 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
• Dual curved side 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.