Red Sea Reefer 425 XL Marine Aquarium


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  • Ultra clear front glass thickness – 12mm
  • Display tank water volume – 240 L/54 gal
  • In cabinet sump water volume – 90 L/24 gal
  • Total system water volume – 422 L/112 gal
  • RO reservoir volume – 12 L/3.2 gal
  • Display tank – L 120cm x H 55cm x W 57.5cm
  • Total height – 142cm
  • Sump Dimensions:
    • Water height – 27cm
    • Skimmer chamber – 49cm x 34cm
    • Pump chamber – 49cm x 15cm
  • Return Pump:
    • 3/4″ threaded hose barb – 25mm
    • Recommended flow – 4000lph
    • (Pump not included) – (1060gph)


  • Rimless, ultra-clear, bevelled edge glass aquarium
  • Elegant marine-spec cabinet
  • Professional sump with constant height skimmer chamber and micron filter bags
  • Silent, regulated down-flow system with emergency overflow
  • Integrated automatic top-up system with reservoir
  • Assembly-ready piping – no gluing required
  • AI Hydra 26™ HD (90W) – 2 unit (additional option)


Combining state of the art technology with a up to date rimless style enabling hobbyists to create an affordable customised reef aquarium of their own. Further, it seamlessly integrates your preferred choice of equipment into the REEF-SPEC Red Sea Reefer 425 XL Marine Aquarium advanced sump and water management system. Enjoy creating your own piece of gorgeous, diverse and thriving reef.

Stunning, Customisable Lighting

The Red Sea Reefer 425 XL Marine Aquarium which contains a revolutionary LED lighting system. The user friendly interface provides you with a multitude of lighting effects at only 9w power consumption – wonderful performance at a mere fraction of the value of traditional lighting.

Further, the seven colour system can be adjusted dynamically to allow for any array of colour options. Finally, the LED system is entirely managed via WiFi and is compatible with Android, iOS, MAC and PC.

The Heart – the MSK 900 Skimmer


At the very heart of the filtration system is the revolutionary protein skimmer. It ideal for SPS corals, passing the entire volume of tank water through the skimmer a minimum of 3 times an hour – with a minimum of a 3-1 water to air ratio. Further, it’s not affected by the regular fluctuation within the water level of the rear sump because of evaporation. It also has an adjustable outlet gate to maintain the optimum skim mate consistency which is able to vary according to actual water conditions.

Finally, the new skimmer pump and impellor run far cooler and quieter than ever before. The built-in silencer on the air intake does a fantastic job at eliminating the skimmer noise.

Integrated Power Systems

The Red Sea Reefer 425 XL Marine Aquarium features an ideally incorporated, one-plug max system. It features a power centre with quick access to the 7 separately switched power sockets for all of the system’s electrical parts. Further, these are set within the cabinet for secure and simply control all of the Red Sea Reefer 425 XL Marine Aquarium sub systems.

Modern Epoxy Laminate Cabinet

Finally, the Red Sea Reefer 425 XL Marine Aquarium features a gorgeous epoxy-finished cabinet. Finally the cabinet features ventilation to supply appropriate cooling for the sump and any additional parts, such as a chiller. You have the choice of black or white exteriors with a stunningly finished black interior contributing to a tidy interior.


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