RED SEA - Reefer 300 G3 - Black - 300L

RED SEA Reefer 300 G3 Black Reef Aquarium: a premium format for a custom marine project

The RED SEA Reefer 300 G3 Black was designed for those who want a high-end reef aquarium that delivers a stunning display without taking up excessive space. Measuring 90 cm long , 57.5 cm wide , and 55 cm high , it offers particularly appealing proportions for creating a spacious, clear, and natural-looking aquascape. Its total volume of 300 liters provides ample room for building a vibrant, well-organized reef that is a pleasure to observe every day. This capacity makes it easier to structure the aquascape, provides more comfortable swimming space for fish, and offers much greater stability than a smaller marine tank. The overall effect is a striking visual presence while remaining perfectly harmonious within a living space.

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

The Red Sea G3 series represents a true evolution in the approach to premium reef aquariums. This isn't just a cosmetic update. The entire design has been revamped to make the system more user-friendly, easier to adjust, and more reliable in everyday use. The ReefATO+ is now included, helping to maintain consistent water levels and stable salinity—two essential parameters in a marine aquarium. The G3 generation also features a ReefMat Ready sump , a redesigned overflow , a new ReefGate valve , and improved hydrodynamic piping . In practice, the system feels smoother, quieter, and generally much more pleasant to maintain. It's precisely these details that make a difference every day.

Ultra-clear 10-12 mm glass tank: clear reef viewing and a refined finish

The Reefer 300 G3 Black features an ultra-clear glass tank that immediately highlights the details of the aquascape, the colors of the corals, and the presence of the fish. The front, sides, and bottom are made of 12mm glass . The back is 10mm glass , giving the tank a cohesive, solid structure perfectly suited to its volume. The beveled edges further enhance the perceived quality and give the tank a particularly refined look. The design remains light and elegant, with no visible reinforcement, resulting in a very clean and uncluttered view of the reef. The result is crisp, modern, and visually appealing, conveying a true sense of quality at first glance.

Black Marine-Spec furniture in marine plywood: a durable, understated and elegant base

The cabinet of the RED SEA Reefer 300 G3 Black is an integral part of the system's overall quality. Made of marine plywood , it has been designed to better withstand humidity and the specific stresses of a reef environment. The adjustable feet facilitate leveling, a particularly useful detail for achieving a clean and perfectly stable setup. The black finish provides a deeper, more contemporary, and particularly elegant look, ideal for highlighting the premium character of the entire system. The cabinet complements the aquarium naturally without cluttering its design, while also contributing to the long-term reliability of the setup.

Optimized overflow and silent water flow: a more pleasant aquarium to live in every day

For a marine aquarium installed in a living room, acoustic comfort quickly becomes crucial. Red Sea has clearly addressed this aspect in 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 minimize turbulence and therefore noise. Their rectangular inlet profile further improves the flow. In practice, this translates to quieter, cleaner, and much more pleasant operation. This kind of detail truly transforms the experience when the aquarium is placed in a living room or office.

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

The Reefer 300 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 entire system. The dual-outlet configuration allows for the connection of one or two return pumps as needed, providing considerable customization. The total circulation system and main pump are not included, allowing you to choose a configuration perfectly suited to your specific reef project.

54-liter Reef-Spec ReefMat Ready sump: a modern and well-designed technical space

The Reef-Spec sump of the Reefer 300 G3 was designed to offer a clear, logical, and easy-to-use technical space. With its 54-liter capacity , it provides ample room for organizing the filtration system while maintaining excellent visibility. It is Refugium-ready and ReefMat compatible , with a removable side panel allowing 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 you to create a system truly tailored to your tank's needs.

ReefATO+ included and smart control via ReefBeat: enhanced stability day after day

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 balance 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 300 G3 Black was designed as a premium base, capable of supporting a demanding reef project over the long term. Its lack of included lighting provides true freedom in configuration, allowing you to choose each technical component according to your preferences. Circulation, the main pump, the skimmer, the ReefMat, the sliding control panel, and lighting are not included as standard, enabling genuine customization of the setup. With its ultra-clear tank, refined 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 high-performing as it is stylish.