Red Sea Reefer 525 G3 - White Cabinet

Red Sea Reefer 525 G3 - White Cabinet

The Red Sea Reefer 525 G3 - White Cabinet is a premium 540 litre / 142.7 gallon reef-ready aquarium and cabinet system designed for aquarists who want a large euro-braced REEFER G3 display with a bright white marine-spec cabinet.

This base REEFER G3 system gives hobbyists the Red Sea tank, cabinet, sump, plumbing, overflow, ReefGate precision drain valve, ReefMat-ready filtration section, and integrated ReefATO+ smart top-off hardware while leaving lighting, return pump, skimmer, heater, wavemakers, dosing, and control equipment open for custom selection. It is a strong choice for reef keepers who want a polished large-format system without being locked into a pre-bundled equipment package.

Red Sea REEFER 525 G3 White Reef System

• Large 150 cm REEFER platform: The REEFER 525 G3 gives customers a substantial reef display with enough length for larger aquascapes, broader coral placement, and more natural fish movement.
• 142.7 gallon total system volume: The 540 L water volume provides the stability and scale needed for a more mature mixed reef or coral-focused display.
• White cabinet finish: The white marine-spec cabinet gives the system a clean, bright, modern appearance that suits contemporary homes, offices, and display spaces.
• Euro-braced construction: The 525 belongs to Red Sea’s larger euro-braced G3 range, giving the display added structural support in a clean premium format.
• Base equipment freedom: The system is supplied as a tank, stand, sump, plumbing, and ATO foundation so customers can choose the exact hardware package they prefer.
• Premium upgrade path: The REEFER 525 G3 is ready for a Red Sea smart ecosystem build with optional ReefRun, ReefLED, ReefWave, ReefMat, ReefDose, and ReefBeat-connected hardware.

Ultra-Clear Euro-Braced Display

• 423 litre display volume: The display provides room for larger coral colonies, open swimming lanes, layered rockwork, and more thoughtful livestock planning.
• 150 x 60 x 55 cm dimensions: The broad 60 cm depth makes it easier to build a reef with caves, open sand, island structures, and front-to-back coral zones.
• 15 mm glass panels: The 525 G3 is listed with 15 mm front, side, bottom, and back glass.
• Ultra-clear low-iron viewing: Reduced glass tint helps coral colour, fish movement, and aquascape detail look cleaner through the panels.
• Large display presence: The 150 cm length gives the aquarium a room-dominating reef look without moving into the longest 180 cm footprint.
• Hidden sump equipment: The white cabinet houses filtration and support equipment below the display so the visible aquarium stays clean and reef-focused.

G3 Water Management and Quiet ReefGate Tuning

• Improved G3 circulation: Red Sea’s updated plumbing and return architecture are designed to move water more efficiently through the system.
• Silent downflow design: The enlarged rectangular drain inlet helps reduce turbulence and makes the system easier to tune quietly.
• ReefGate precision valve: Fine drain control allows the overflow level to be adjusted for stable, near-silent operation.
• Surface-skimming overflow: The central overflow with removable surface skimmer helps pull surface film into the filtration system.
• Curved return nozzles: Dual curved returns improve water distribution back into the display and complement dedicated reef wavemakers.
• Pre-assembled pipework: The included plumbing gives the system a clean, factory-designed water path from display to sump and back.

REEF-SPEC Sump and ReefATO+ Stability

• 116 litre sump volume: The larger sump gives room for skimmer selection, return equipment, mechanical filtration, chemical media, probes, dosing lines, and maintenance access.
• ReefMat-ready mechanical chamber: The removable filtration compartment includes micron socks and media cups and is designed for optional Red Sea ReefMat installation.
• Integrated ReefATO+: ReefATO+ helps manage evaporation-driven water-level changes and salinity stability while providing temperature monitoring and leak detection.
• Flexible filtration design: The sump supports carbon, reactors, refugium-style planning, protein skimming, and future equipment upgrades.
• Clean service workflow: The cabinet sump layout keeps maintenance accessible without cluttering the display area.
• Built for a growing reef: The system can start as a simple mixed reef and grow into a more automated coral-focused display over time.

White Marine-Spec Cabinet with Aluminum Supports

• Bright furniture-style look: The white cabinet visually lightens the large aquarium and works well in modern, open, or minimalist rooms.
• Marine-spec plywood build: The cabinet is designed for aquarium use with moisture-resistant construction, leveling feet, stainless steel hinges, and a clean exterior finish.
• Front aluminum supports: Red Sea reinforces 525 models and above with front aluminum cabinet supports to improve rigidity on larger systems.
• Organized equipment space: The cabinet keeps sump, plumbing, ATO hardware, and optional accessories contained below the display.
• Better installation confidence: The included matching stand removes the uncertainty of pairing a large aquarium with an unsuitable generic cabinet.
• Display-ready presentation: The white cabinet creates a polished installation suitable for homes, offices, and customer-facing display areas.

Red Sea Reefer 525 G3 White Specifications

• Total system volume: 540 L / 142.7 gal.
• Display volume: 423 L / 111.7 gal.
• Sump volume: 116 L / 30.6 gal.
• Display dimensions: 150 cm L x 60 cm W x 55 cm H / approx. 59.1 x 23.6 x 21.7 in.
• Total height with cabinet: 142 cm / approx. 55.9 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 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 8000, sold separately.
• Lighting: Sold separately and should be selected for full 150 cm x 60 cm reef coverage.

Application Notes for the REEFER 525 G3 White

• Best use: Ideal for larger mixed reefs, LPS systems, soft coral displays, and SPS-capable builds when matched with appropriate lighting, flow, and filtration equipment.
• Equipment selection: Add a return pump, protein skimmer, lighting, heater, wavemakers, and test kits before cycling the aquarium.
• Lighting planning: Choose lighting based on coral goals, spread requirements, mounting preference, and the full 150 cm display length.
• Flow planning: Use dedicated wavemakers for coral circulation beyond sump turnover, especially in dense aquascapes.
• Filtration upgrade path: The ReefMat-ready sump supports future automatic mechanical filtration without replacing the system.
• 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.