Red Sea REEFER 425 G3 – Premium Silent and Upgradeable Reef Aquarium

Red Sea REEFER 425 G3

Display volume: 112 gallons
Total system volume: 140 gallons
Sump volume: 28 gallons
Tray dimensions: 59.1 × 23.6 × 25.6 inches
Total height with cabinet: 59 inches

Description

The REEFER 425 G3 is a next-generation, all-in-one reef platform designed to provide a stable, quiet, and durable foundation for discerning aquarists. Building upon improvements to the G3 series, this system combines thicker, ultra-clear glass, a reinforced rimless design, and a marine-spec cabinet for long-term use. The plumbing is ready to assemble without glue, incorporating a quiet overflow and optimized water management. The system is eligible for an extended warranty and designed to accommodate modern accessories, including advanced filtration and automation.

The system's architecture emphasizes aesthetics and quiet operation. The water-resistant cabinet is designed for humid environments and features adjustable feet for precise leveling. Pre-assembled plumbing ensures a clean and quick installation, while fine-tuning the flow rate guarantees a consistent flow. A safe emergency overflow protects the system in case of flow fluctuations, reducing risks and noise while simplifying daily maintenance.

The integrated REEF-SPEC sump is designed as a true technical hub. It includes mechanical filtration with a dedicated compartment for micron filters and media, a skimmer chamber with adjustable water level, an efficient bubble trap to minimize microbubbles, and an integrated auto-top-off reservoir for reverse osmosis water. The design is plug-and-play and ready to accommodate a ReefMat system without modification, ensuring a simple upgrade to automated filtration.

The modular design of the REEFER 425 G3 allows for gradual automation and tangible long-term benefits. Reduced manual maintenance, increased water parameter stability, and extended clarity enhance the user experience. The system supports a higher organic load, is suitable for demanding SPS reefs as well as LPS or mixed tanks, and integrates seamlessly into high-end residential settings, showrooms, or specialty shops.

Designed for serious reef projects, this model is aimed at experienced aquarists seeking robustness, meticulous craftsmanship, controlled flow management, and advanced compatibility with modern equipment. It offers true peace of mind thanks to its proven design, quiet operation, and upgradeability.

In summary, the REEFER 425 G3 is a complete technological and aesthetic platform, designed for high-end reefs with few compromises, and capable of evolving according to the real needs and experience of the user.

Dimensions, Volumes and Use Cases

Display volume: 112 gallons
Total system volume: 140 gallons
Sump volume: 28 gallons
Tray dimensions: 59.1 × 23.6 × 25.6 inches
Approximate total height with furniture: 59 inches

Generous format offering substantial technical space to integrate chiller, calcium reactor, advanced controller or multiple modules, without compromising aesthetics or ease of maintenance. Ideal for SPS-dominant reefs or complex mixed setups.

Recommended Equipment

Budget-friendly option — reliable and quick to install
Main circulation pump: 2 units minimum for homogeneous flow over this length; increase to 3 units to eliminate dead zones and improve circulation.
Main lighting: 2 well-spaced units effectively cover the volume; simple settings, stable spectrum, ideal for controlled start-up.
Light arm/support: 2 adjustable supports for precise positioning and unobstructed access to the tank.

Mid-range option — increased coverage and fine-tuning
Triple mixing: 3 strategically placed pumps improve circulation, stabilize the flow and reduce waste accumulation.
Lighting: 2 to 3 units optimized for full coverage over 59 inches; adjust height to avoid underlit areas.
Quick tips: gradual increase in power, regular cleaning, observation of coral behavior.

Simple premium option — scalable and redundant
Optimized quadruple switching: safe redundancy, complete coverage and simulation of various currents for demanding SPS.
High-performance lighting: 3 to 4 units for high PAR, optimal growth and complex layouts.
Scalable installation: clean supports, documented settings, adding or removing equipment without major modifications.

Delivery available throughout Canada. Red Sea manufacturer's warranty included.