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Water treatment
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5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
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Substrate for reactor
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The RED SEA Reefer 300 G3 Black was designed for reef aquarists who want a high-end base while maintaining true freedom in their lighting choices. With a total volume of 300 liters , a 246-liter main tank , and a 54-liter sump , this model offers an excellent balance between compactness, stability, and ease of use. This version is offered without included lighting , allowing you to select the lighting solution best suited to your reef project. The G3 generation also brings significant advantages with the included ReefATO+ , a Reef-Spec ReefMat Ready sump , improved hydrodynamic piping , a high-precision ReefGate valve , and a durable black marine plywood cabinet .
Free delivery on pallet to your home in Metropolitan France.
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.
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.
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.

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.

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.

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.
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.

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.

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.
The T Controller Twin 2.0 is the ideal tool for maintaining the temperature in your aquarium. This digital temperature controller is designed to manage heating and cooling units simultaneously , ensuring a stable and optimal environment for your fish and corals. Thanks to its precision of 0.1°C , it allows fine adjustment of the temperature, covering a range of 16 to 40°C . With high switching power and a seawater-resistant temperature probe, this device is as robust as it is efficient. The clear, easy-to-read LCD screen informs you in real time of the thermal conditions of your aquarium.
Titanium Heater 100W from Aqua Medic is an alternative to glass heaters . Titanium is seawater resistant and unbreakable. Naturally the heaters are equipped with an overheating protection . Heaters should always be installed with a thermostat . For temperature-dependent control, we recommend the Aqua Medic T controller twin .
The AQUA-MEDIC Arctic Breeze 2-pack is a simple and effective solution for limiting temperature increases in aquariums during warmer periods. Thanks to its two adjustable fans, it promotes water cooling through evaporation and can lower the water temperature by up to approximately 4°C , depending on ambient conditions. Its adjustable airflow can reach 113 m³/h , allowing for easy adaptation of ventilation to the tank's needs. Equipped with quiet and durable brushless motors , this system is suitable for both freshwater and marine aquariums. Its 12V low-voltage power supply and adjustable 3-12V power adapter also allow for controlled energy consumption.
The AQUA-MEDIC Platinum Line 800 is a high-end reverse osmosis system designed to produce soft, very low-salt water suitable for the demanding needs of both freshwater and saltwater aquariums. Capable of supplying up to approximately 800 liters of purified water per day , it combines a powerful booster pump, three large 10-inch filter housings, a high-performance membrane, and a final demineralizing resin stage. Its system can achieve a salt retention rate of up to 99% while minimizing water waste, with a wastewater-to-pure-water ratio as low as 1:1 . Automatic backwashing, an integrated pressure gauge, and continuous monitoring of the produced water make it particularly convenient to use on a daily basis.
Titanium Heater 200W from Aqua Medic is an alternative to glass heaters . Titanium is seawater resistant and unbreakable . Naturally the heaters are equipped with an overheating protection . Heaters should always be installed with a thermostat . For temperature-dependent control, we recommend the Aqua Medic T controller twin .
Red Sea 60 Sliding Control Panel helps you maximize your cabinet space by placing your metering pumps, controllers and other equipment in an easily accessible location . It fits on either side of the cabinet. Made of "marine-spec" marine plywood with stainless steel cushioned slides , it allows easy assembly and access to all your equipment .
The ReefRun Dual Controller allows control of up to 2 compatible ReefRun DC return pumps , a DC Skimmer or a combination of both.
The Deltec Skimmer 400i is the ideal skimmer for maintaining crystal clear water in aquariums from 100 to 400 liters . Its ergonomic cylindrical design guarantees optimal filtration , while its 10-level adjustable Deltec DCC 1 pump ensures efficient extraction of impurities with minimal power consumption. Its anti-overflow system protects your aquarium from waste backflow, and its ultra-quiet operation makes it a discreet and efficient ally for your installation.
The RED SEA Reefer 625 G3 White is designed for enthusiasts who want to build a high-end reef aquarium while maintaining complete freedom in their lighting choices. With a total volume of 620 liters , a 497-liter main tank , and a 123-liter sump , this model provides a solid foundation for creating a spacious, stable, and visually stunning reef. This version is offered without ReefLED , allowing you to select the lighting solution best suited to your project. The G3 generation also brings significant improvements, including the included ReefATO+ , a Reef-Spec ReefMat Ready sump , an optimized overflow , a high-precision ReefGate valve , and a durable white marine plywood cabinet .
Free delivery on pallet to your home in Metropolitan France.
The RED SEA Reefer 625 G3 Black is designed for enthusiasts who want to build a high-end reef aquarium while maintaining complete freedom in their lighting choices. With a total volume of 620 liters , a 497-liter main tank , and a 123-liter sump , this model provides a solid foundation for creating a spacious, stable, and visually stunning reef. This version is offered without ReefLED , allowing you to select the lighting solution best suited to your project. The G3 generation also brings significant improvements, including the included ReefATO+ , a Reef-Spec ReefMat Ready sump , an optimized overflow , a high-precision ReefGate valve , and a durable black marine plywood cabinet .
Free delivery on pallet to your home in Metropolitan France.
The RED SEA Reefer Peninsula 500 G3 Black is designed for enthusiasts who want a stylish, spacious reef aquarium that will become a true living art piece. With its Peninsula room divider design , a total volume of 519 liters , a 412-liter main tank , and a 106.6-liter sump , this model provides a solid foundation for building a spectacular reef without becoming overly imposing. This version is offered without lighting included , giving you complete freedom to choose the lighting solution best suited to your project. The G3 generation also offers significant advantages with the included ReefATO+ , a Reef-Spec ReefMat Ready sump , advanced hydrodynamic piping , and a high-precision ReefGate valve .
Free delivery on pallet to your home in Metropolitan France.
The RED SEA Reefer Peninsula 500 G3 White is designed for enthusiasts who want an elegant, spacious reef aquarium that will become a true living art piece. With its Peninsula room divider design , a total volume of 519 liters , a 412-liter main tank , and a 106.6-liter sump , this model provides a solid foundation for building a spectacular reef without becoming overly imposing. This version is offered without included lighting , giving you complete freedom to choose the lighting solution best suited to your project. The G3 generation also offers significant advantages with the included ReefATO+ , a Reef-Spec ReefMat Ready sump , advanced hydrodynamic piping , and a high-precision ReefGate valve .
Free delivery on pallet to your home in Metropolitan France.
The RED SEA Reefer Peninsula 700 G3 Black was designed for enthusiasts who want a spectacular reef aquarium, capable of structuring a room as much as it is of showcasing a marine reef. With its Peninsula shape , total volume of 705 liters , a 568-liter main tank , and a 136.7-liter sump , it offers an exceptional foundation for building an ambitious and long-lasting aquascape. This version is offered without included lighting , allowing complete freedom to select the lighting solution best suited to your project. The G3 generation also adds significant advantages with the included ReefATO+ , a Reef-Spec ReefMat Ready sump , advanced hydrodynamic piping , a high-precision ReefGate valve , and a 60-inch sliding control panel .
Free delivery on pallet to your home in Metropolitan France.
The RED SEA Reefer Peninsula 700 G3 White was designed for enthusiasts who want a spectacular reef aquarium, capable of structuring a room as much as it is of showcasing a marine reef. With its Peninsula shape , total volume of 705 liters , a 568-liter main tank , and a 136.7-liter sump , it offers an exceptional foundation for building an ambitious and long-lasting aquascape. This version is offered without included lighting , allowing complete freedom to select the lighting solution best suited to your project. The G3 generation also adds significant advantages with the included ReefATO+ , a Reef-Spec ReefMat Ready sump , advanced hydrodynamic piping , a high-precision ReefGate valve , and a 60-inch sliding control panel .
Free delivery on pallet to your home in Metropolitan France.
The RED SEA Reefer Peninsula 500 G3 Deluxe Black is designed for enthusiasts who want a stylish, spacious reef aquarium that's a true living art piece. With its Peninsula room divider design , a total volume of 519 liters , a 412-liter main tank , and a 106.6-liter sump , this model provides a solid foundation for building a spectacular reef without requiring an oversized setup. This Deluxe version comes with three ReefLED 115 lights and a hanging light bar , providing consistent, well-distributed, and visually clean illumination. The G3 generation also offers significant advantages, including the ReefATO+ , a Reef-Spec ReefMat Ready sump , advanced hydrodynamic piping , and a high-precision ReefGate valve .
Free delivery on pallet to your home in Metropolitan France.
The RED SEA Reefer Peninsula 500 G3 Deluxe White is designed for enthusiasts who want an elegant, spacious reef aquarium that will become a true living art piece. With its Peninsula room divider design , a total volume of 519 liters , a 412-liter main tank , and a 106.6-liter sump , this model offers a solid foundation for building a spectacular reef without requiring an oversized setup. This Deluxe version comes with three ReefLED 115 lights and a hanging light bar , providing consistent, well-distributed, and visually clean illumination. The G3 generation also offers significant advantages , including the ReefATO+ , a Reef-Spec ReefMat Ready sump , advanced hydrodynamic piping , and a high-precision ReefGate valve .
Free delivery on pallet to your home in Metropolitan France.