Red Sea Reefer Peninsula 500 G3 - Black Cabinet

The Red Sea Reefer Peninsula 500 G3 - Black Cabinet is a premium 519 litre / 137.0 gallon reef-ready peninsula aquarium system for aquarists who want a larger three-sided room-divider display with euro-braced ultra-clear glass and a black marine-spec cabinet.

With a 125 cm length and broad 63.5 cm width, the Peninsula 500 G3 gives reef keepers more aquascaping room, more swimming space, and a stronger room-divider presence than the smaller Peninsula 350. This base REEFER Peninsula system includes a euro-braced 15 mm ultra-clear glass aquarium, black marine-spec plywood cabinet, REEF-SPEC sump, ReefMat-ready mechanical chamber, micron socks, media cups, ReefGate precision valve, central overflow with removable surface skimmer, curved dual side return nozzles, pre-assembled plumbing, and integrated ReefATO+ smart top-off control. Lighting, return pump, skimmer, heater, wavemakers, optional ReefMat, rock, sand, salt, and livestock are selected separately.

Red Sea REEFER Peninsula 500 G3 Black Reef System

• Larger peninsula display: The 500 G3 extends the room-divider concept to a 125 cm display, creating more visual impact and more usable reef space.
• Three-sided viewing: The aquascape can be enjoyed from both long sides and the end panel, making the system ideal for open rooms, feature walls, and divider-style installations.
• 519 litre total system volume: The larger water volume supports improved stability, more livestock planning flexibility, and stronger long-term reef potential.
• Black cabinet finish: The black marine-spec cabinet creates a bold high-contrast look that keeps attention on the reef.
• Custom equipment flexibility: This base package lets customers choose the exact lighting, return pump, skimmer, heater, flow, and control equipment they prefer.
• G3 reef-ready infrastructure: ReefGate control, optimized plumbing, quiet downflow, dual returns, ReefATO+, and a ReefMat-ready sump give the system a premium foundation.

Euro-Braced Ultra-Clear Peninsula Display

• 412 litre display volume: The main aquarium gives 108.8 gallons of reef space for larger aquascapes, coral colonies, open sand, and selected reef fish.
• 125 x 63.5 x 60 cm display: The longer footprint supports broader island layouts, extended rock structures, open channels, and more natural room-divider proportions.
• 15 mm glass build: The Peninsula 500 G3 uses 15 mm front, side, bottom, and back glass.
• Euro-braced format: The larger 500 model is euro-braced for added rigidity while maintaining a clean premium aquarium profile.
• Ultra-clear viewing: Low-iron glass improves clarity and reduces tint so coral colour and reef lighting show more accurately from multiple sides.
• Designed for display symmetry: Since both long sides are visible, rockwork and equipment placement should be planned to look clean from every viewing angle.

G3 Flow Architecture and ReefGate Control

• Hydrodynamically optimized piping: The G3 plumbing layout is designed for stronger, more efficient water movement from display to sump and back.
• Quiet rectangular downflow: The low-turbulence drain inlet helps reduce noise and makes the system easier to tune.
• ReefGate precision valve: Fine drain adjustment allows the overflow and sump water level to be tuned for quiet, stable operation.
• Central overflow with surface skimmer: The overflow pulls surface water into the filtration path and helps reduce film across the display.
• Curved dual side returns: The return outlets help sweep water along the long peninsula run and support better distribution through the display.
• Pre-assembled pipework: Factory-designed plumbing helps simplify setup and keeps the under-cabinet system organized.

REEF-SPEC Sump and ReefATO+ Stability

• 106.6 litre sump volume: The larger sump provides useful space for return equipment, skimmer selection, media, dosing lines, probes, and maintenance access.
• ReefMat-ready mechanical chamber: The mechanical filtration stage includes micron socks and media cups and is designed for optional ReefMat installation.
• Recommended ReefMat 500 path: The optional ReefMat 500 is the natural Red Sea roller-filter upgrade for this system.
• Integrated ReefATO+: ReefATO+ helps maintain stable water level and salinity while also providing temperature monitoring and leak detection.
• Flexible filtration layout: The sump supports protein skimming, carbon, media reactors, dosing, monitoring, and other equipment depending on the reef plan.
• Cleaner display area: Filtration equipment stays inside the cabinet so the visible three-sided aquarium remains clean and reef-focused.

Red Sea Reefer Peninsula 500 G3 Black 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: Black 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

• Best use: Ideal for larger room-divider reef aquariums, mixed reefs, LPS coral displays, soft coral systems, and feature installations.
• Equipment planning: Add the return pump, skimmer, lighting, heater, wavemakers, optional ReefMat, test kits, and automation before cycling.
• Lighting planning: The recommended ReefLED G2 170 fixtures are sold separately, and lighting should be planned for even coverage across the full 125 cm length and 63.5 cm width.
• Flow planning: Dedicated wavemakers are recommended to supplement the dual side returns and prevent detritus from settling behind central rockwork.
• Room-divider planning: Position the tank with enough access for cleaning both long viewing panels and servicing the cabinet and sump.
• 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

• Plan the room-divider location: Confirm there is enough clearance for three-sided viewing, glass cleaning, cabinet access, and freight placement.
• Assemble and level the cabinet: Build the black cabinet according to Red Sea’s instructions and confirm it is level before placing the aquarium.
• Choose equipment before filling: Select return pump, skimmer, lighting, heater, wavemakers, optional ReefMat, and controller layout before adding water.
• Install plumbing carefully: Confirm the overflow, ReefGate valve, downflow, return plumbing, sump, and ReefATO+ are installed correctly.
• Leak test with freshwater: Run the system with freshwater before final saltwater setup to verify seals, sump level, and return flow.
• Tune the ReefGate gradually: Make small valve adjustments until the overflow and sump operate 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 stability.

What’s Included

• Euro-braced ultra-clear peninsula aquarium
• Black 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.