RED SEA - Reefer 425 G3 Deluxe - Black - 433L - 2 ReefLED 170 and 2 stems

RED SEA Reefer 425 G3 Deluxe Black Reef Aquarium: a premium format for an ambitious marine project

The RED SEA Reefer 425 G3 Deluxe Black was designed for those seeking a high-end reef aquarium that delivers stunning visuals without being overly large. Measuring 120 cm long , 60 cm wide , and 55 cm high , it offers particularly pleasing proportions for creating a spacious, structured, and natural aquascape. Its total volume of 433 liters provides ample room for building a balanced reef, with space for corals, more comfortable swimming areas for fish, and improved overall parameter stability. This is the kind of tank that allows you to take a serious approach while remaining perfectly suited to a contemporary interior.

Deluxe version with 2 ReefLED 170s and 2 brackets: consistent reef lighting right from the start

This Deluxe version comes with two ReefLED 170s and two mounting brackets , a configuration perfectly suited to the tank's dimensions. On a 120cm reef aquarium, having lighting already designed to effectively cover the entire front panel makes a significant difference to the setup. The installation remains clean, modern, and balanced, without the need for separate suspension solutions. The visual presentation is more cohesive, the tank is showcased to its best advantage, and the overall system immediately conveys a truly premium feel. For those who want a well-equipped reef aquarium from the start, this is a tangible, easy-to-appreciate, and particularly reassuring advantage.

Red Sea G3 range: a technical evolution designed for greater comfort and reliability

The Red Sea G3 series is more than just a cosmetic update. The entire design has been revamped to make the aquarium more user-friendly, more stable over time, and easier to upgrade. The ReefATO+ is now included, helping to maintain a constant water level and stable salinity—two essential parameters for a marine aquarium. This generation also features new hydraulic controls , a ReefMat Ready sump , a redesigned overflow , a more precise ReefGate valve , and improved hydrodynamic piping . In practice, this translates to a smoother, quieter, and much more enjoyable system for everyday use.

Ultra-clear 12-15 mm glass tank with internal rim: a clear view of the reef and a reassuring structure

The Reefer 425 G3 Deluxe features an ultra-clear glass tank that immediately showcases the colors, textures, and depth of the reef aquascape. The front panel is made of 12mm glass , while the sides are 15mm . The bottom and back are also 12mm glass , giving the tank a solid and cohesive design for its size. The beveled edges further enhance the perceived quality, while the internal bracing improves the overall rigidity of the structure. The result is a visually clean tank with excellent clarity that truly highlights the reef without visually cluttering the tank.

Black Marine-Spec furniture made of marine plywood: a clean, solid and durable base

The cabinet for the RED SEA Reefer 425 G3 Deluxe Black aquarium does much more than simply complement the tank. It plays a vital role in the overall quality of the setup. Made of marine plywood , it has been designed to better withstand humidity and the specific demands of a reef environment. The adjustable feet facilitate leveling, a particularly useful detail when precise aquarium installation is required. Its black finish provides a more striking, contemporary, and elegant visual presence, ideal for highlighting the premium character of the tank. The overall effect is understated, sophisticated, and exceptionally well-made, giving the reassuring feeling of a cabinet built to last and accompany the aquarium for years to come.

Optimized overflow and silent water flow: cleaner everyday operation

For a marine aquarium placed in a living room, noise level is extremely important. Red Sea has clearly paid close attention to this aspect with the Reefer G3 . The plumbing is concealed within a large overflow with an overflow and surface suction, equipped with wide, removable combs that are easy to clean. The downpipes have been redesigned to reduce turbulence and therefore flow noise. Their rectangular inlet profile further improves water circulation. In use, the system becomes quieter, smoother, and much more pleasant to live with, providing an overall feeling of cleanliness and control that makes all the difference in daily life.

High-precision ReefGate valve and advanced hydrodynamic piping for better-controlled circulation

The Reefer 425 G3 benefits from modernized hydraulic management for simpler adjustments and a more pleasant user experience. The new ReefGate valve , installed on the overflow, allows for much more precise flow adjustment. Once the correct balance is achieved, operation becomes significantly quieter. Simultaneously, the advanced hydrodynamic piping improves water circulation throughout the system. The dual-outlet configuration allows for the connection of one or two return pumps, depending on the installation plan. The total circulation pump and main pump are not included, giving you the freedom to choose a configuration truly suited to your reef type and individual technical preferences.

90-liter Reef-Spec ReefMat Ready sump: a modern and practical technical space

The Reef-Spec sump of the Reefer 425 G3 was designed to offer a clear, logical, and easy-to-use technical space. With its 90-liter capacity , it provides ample room for organizing the filtration system while maintaining good visibility. It is Refugium-ready and ReefMat compatible , with a removable baffle that allows for the quick installation of a ReefMat 250, 500, or 1200. It also features a height-adjustable skimmer compartment , micron bags , a removable media cup , and a bubble trap to prevent microbubbles from returning to the main tank. The skimmer, ReefMat, and main pump are not included, allowing for a custom setup.

ReefATO+ included and smart control via ReefBeat: enhanced stability for everyday use

All G3 models now come equipped with ReefATO+ , a real advantage for a marine aquarium of this size. This system helps maintain a constant water level and stable salinity , two essential parameters for the comfort of the tank's inhabitants and the overall stability of the reef. It also integrates a precise temperature probe and a high-sensitivity leak detector , further enhancing the system's safety. Control via the ReefBeat app adds a highly practical dimension for monitoring the system and keeping an eye on important parameters. For an ambitious reef project, it offers true daily convenience.

A RED SEA aquarium designed for enthusiasts who want a high-end, upgradeable base.

The RED SEA Reefer 425 G3 Deluxe Black was designed as a premium base, capable of supporting a demanding reef project over the long term. Its Deluxe version, with two ReefLED 170 lights and two mounting brackets, already provides true visual and technical coherence, while allowing the freedom to choose the rest of the equipment according to individual preferences. The circulation pump, main pump, skimmer, ReefMat, and sliding control panel are not included as standard, allowing for genuine customization of the setup. With its ultra-clear tank, robust structure, modern sump, elegant black finish, and the improvements specific to the G3 generation, this model lays a particularly solid foundation for a reef aquarium that is as stylish as it is high-performing.