Red Sea Reefer 625 G3 - White Cabinet

The Red Sea Reefer 625 G3 - White Cabinet is a premium 620 litre / 163.8 gallon reef-ready aquarium and cabinet system that combines a deep 150 cm euro-braced Red Sea display with a bright white marine-spec cabinet and full G3 sump-based infrastructure.

This base REEFER G3 system is made for aquarists who want a large professional reef foundation while keeping control over the final equipment selection. It includes a euro-braced ultra-clear glass aquarium, white marine-spec plywood cabinet with front aluminum supports, REEF-SPEC sump, ReefMat-ready mechanical filtration chamber, pre-assembled plumbing, ReefGate precision valve, surface-skimming overflow, curved dual return nozzles, and integrated ReefATO+ smart top-off control.

Red Sea REEFER 625 G3 White Reef System

• Deep large-format reef platform: The 625 G3 gives reef keepers a 150 cm display with a broad 65 cm depth and 60 cm height for a more substantial aquascape.
• 163.8 gallon total system volume: The 620 L system volume supports better stability and more flexible reef planning than smaller aquariums.
• White cabinet finish: The white marine-spec cabinet creates a bright, modern, furniture-style installation that visually lightens the large aquarium.
• Base-system freedom: Major hardware choices are left open so the aquarist can choose the return pump, lighting, skimmer, heater, flow, and automation equipment.
• Euro-braced ultra-clear display: The larger G3 format uses euro-bracing and thick ultra-clear glass for strength and premium viewing.
• Strong long-term platform: The sump volume and display size make this system suitable for customers planning a serious mixed reef or coral-focused build.

Deep Ultra-Clear Display with White Cabinet Styling

• 497 litre display volume: The display offers meaningful space for coral colonies, larger aquascape structures, open sand sections, and selected reef fish.
• 150 x 65 x 60 cm dimensions: The wider and taller display creates a stronger sense of depth than narrower 150 cm aquariums.
• Heavy glass construction: The model is listed with 19 mm front, side, and back glass and a 15 mm bottom panel.
• Low-iron clarity: Ultra-clear glass helps maintain clean colour rendition through the larger viewing panels.
• Bright furniture presentation: The white cabinet makes the large system feel cleaner and lighter in modern interiors.
• Hidden equipment layout: The sump keeps filtration, plumbing, and support gear below the display for a cleaner room-facing aquarium.

G3 Flow Control and Quiet Downflow

• Hydrodynamically improved water path: The REEFER G3 plumbing design supports stronger, more efficient movement through the system.
• Low-turbulence drain inlet: The rectangular downflow inlet helps reduce noise and turbulence in the overflow.
• ReefGate precision tuning: The gate valve allows fine downflow adjustment so the sump and overflow can be tuned for quieter operation.
• Removable surface skimmer: The overflow helps remove surface film and keeps the display water surface cleaner.
• Curved dual returns: Improved return nozzles help distribute return flow into the large display.
• Clean plumbing package: Pre-assembled drain and return plumbing keeps installation more organized than building a custom system from scratch.

REEF-SPEC Sump and Smart ReefATO+

• 123 litre sump capacity: The large sump gives room for skimmer selection, return equipment, mechanical filtration, media, probes, reactors, dosing, and future upgrades.
• ReefMat-ready filtration: The removable mechanical chamber includes micron socks and media cups and is designed for optional Red Sea ReefMat installation.
• Integrated ReefATO+: ReefATO+ helps stabilize water level and salinity while adding temperature monitoring and leak detection.
• Equipment planning flexibility: The sump can support a simple mixed reef or a more advanced system with skimmer, reactors, dosing lines, and monitoring equipment.
• Service-friendly cabinet access: The larger stand and sump make maintenance more practical for a system of this size.
• Smart ecosystem potential: The system pairs naturally with optional Red Sea ReefRun, ReefLED, ReefWave, ReefMat, ReefDose, and ReefBeat-connected hardware.

White Marine-Spec Cabinet with Aluminum Reinforcement

• Purpose-built cabinet: The cabinet is designed for the aquarium footprint and loaded system weight instead of relying on a generic furniture stand.
• Front aluminum supports: Red Sea reinforces 525 models and above with front aluminum supports to help maintain rigidity across the large cabinet span.
• White marine-spec plywood: The moisture-resistant cabinet construction is built for aquarium use and finished in a clean white exterior.
• Leveling feet: Adjustable feet help the system sit properly on suitable flooring during installation.
• Organized equipment area: The cabinet provides space for sump equipment, power management, ATO hardware, and future upgrades.
• Modern display style: The white finish works well in bright rooms, contemporary homes, offices, and retail display spaces.

Red Sea Reefer 625 G3 White 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: White 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 White

• Best use: Ideal for large mixed reefs, LPS coral systems, soft coral displays, SPS-capable reef builds, and customers wanting a deeper 150 cm aquarium.
• Equipment planning: Select lighting, return pump, skimmer, heater, wavemakers, and testing equipment before filling the system.
• Lighting planning: The 65 cm depth requires thoughtful lighting placement and fixture selection for even coral coverage.
• Flow planning: Add wavemakers to move water across the full length and behind rock structures.
• Filtration planning: The large ReefMat-ready sump supports advanced filtration and automation without replacing the aquarium.
• 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 G3 Series Video

Setup and Installation Notes

• Build and level the cabinet: Assemble the white cabinet according to Red Sea’s instructions and confirm it is level before installing the aquarium.
• Plan major hardware first: Choose return pump, skimmer, lighting, heater, wavemakers, and optional automation before adding water.
• Install sump and plumbing: Confirm the overflow, downflow, ReefGate valve, return plumbing, sump, and ReefATO+ components are correctly installed.
• Run a freshwater leak test: Test the plumbing and sump before final saltwater setup.
• Tune the ReefGate carefully: Adjust the valve slowly until the drain and sump run quietly and consistently.
• Use RO/DI water: RO/DI water is recommended for saltwater mixing and top-off.
• Cycle before stocking: Establish biological filtration fully before adding livestock.

What’s Included

• Euro-braced ultra-clear glass aquarium
• White marine-spec plywood cabinet with leveling feet and front aluminum supports
• 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.