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Red Sea Reefer 425 XL Aquarium - 112 Gallon (Black)


Starting at $122/mo with . Prequalify now

Item #: RS42241

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The new REEFER™ XL 425 is 3" wider than the regular REEFER™ 350 & 450, enabling you to create substantial aquascaping while still providing plenty of water volume and space for your aquarium inhabitants. Both also feature proportionately larger sumps with an extra 1.2" water height in the skimmer chamber.

Red Sea’s REEFER™ series of Reef Systems provide advanced hobbyists with a solid foundation for building a fully featured reef or marine aquarium. They are constructed from thick, beveled-edge, ultra-clear glass to support their elegant and modern rimless design. The aquarium sits on a recessed base that “floats” it above the cabinet, which seamlessly follows the contour of the glass.

The REEFER™ series combines a contemporary, rimless, ultra-clear glass aquarium with a stylish cabinet and a comprehensive water management system including a professional sump with integrated automatic top-up and Red Sea’s unique silent down-flow system. The water management system features removable surface-skimming combs surround the top of the centrally located overflow box that houses the downpipe, sump return pipe and the discreet multi-directional “eyeball” return outlet nozzle. In the event of a blockage in the regulated downpipe, an additional emergency overflow pipe provides an unrestricted free flow of aquarium water directly to the sump.

Incorporating technologies originally developed for Red Sea’s all-in-one MAX® coral reef systems, the REEFER™ series is designed for ease of operation while enabling the advanced hobbyist to install an unlimited choice of lighting, filtration, circulation and controllers to create a uniquely customized system.

To ensure a constant water level in the pump compartment, all REEFER™ sumps include an integrated automatic freshwater top-up unit, guaranteeing a constant, stable water flow throughout the complete system. Supplied as a complete self-assembly kit, all pipe work is ready without the need for any gluing.

REEFER XL Model Specification



Main Features Ultra clear front and side glass
Ultra clear front glass thickness (mm) 12 (1/2") 15 (5/8")
Built in surface skimmer
Integrated automatic top up system
System Volumes Display tank water volume (L) 332 (88 gal) 409 (108 gal)
In cabinet sump water volume (L) 90 (24 gal) 116 (31 gal)
Total system water volume (L) 422 (112 gal) 525 (139 gal)
RO reservoir volume (L) 12 (3.2 gal) 16.5 (4.3 gal)
System Dimensions Display tank length (cm) 120 (47") 150 (59")
Display tank height (cm) 55 (22") 55 (22")
Display tank width (cm) 57.5 (22.6") 57.5 (22.6")
Total system height with cabinet (cm) 142 (56") 142 (56")
Sump Dimensions Sump Water height (cm) 27 (10.6") 27 (10.6")
Sump Skimmer chamber Dimensions (cm) 49 x 34 (19.3" x 13.4") 49 x 34 (19.3" x 13.4")
Sump Pump chamber Dimensions (cm) 49 x 15 (19.3" x 6") 49 x 15 (19.3" x 6")
Return Pump Recommended Return Pump flow (lph) (pump not included) 4000 (1060 gph) 4000 (1060 gph)

Manufacturer information

With a dedicated team of scientists and other professionals, Red Sea is widely recognized as a leading innovator and manufacturer of quality products for aquarium hobbyists. Red Sea constantly strives to provide hobbyists of all levels with highly effective solution-driven products designed to make your fish-keeping experience as enjoyable and successful as possible.

The embodiment of Red Sea’s dedication to providing solutions for today’s reef-keepers is its range of MAX-NANO, MAX-E & MAX-S aquariums- The only choice for true Plug & Play™ coral reef aquariums, now featuring the very latest in LED lighting technology.

For advanced reef-keepers the Red Sea REEFER provides a great platform into which you can add your own selection of hardware. With its ultra-clear glass, ATO built-in, silent flow valve and superb quality of finish the REEFER sets the standard for those wishing to customize. REEFER is also available as a Deluxe version with LED lighting included.

Red Sea’s unique Reef Care Program (RCP) provides a comprehensive, safe and easy to use program for testing and supplementing within reef aquaria, and is perfectly complemented by Red Sea’s Coral Pro & Red Sea Salt’s, which has become the salt of choice for those seeking the very highest quality water quality for their coral reef aquariums. Both salts are made using a unique natural process which delivers unrivalled homogeneity and is perfect for delicate corals. Check your individual bucket of salt’s composition using Red Sea’s innovative new “MyBatch” software.

Whatever your aquatic needs, Red Sea delivers high quality innovative, solution based products.

5 Stars


Reviewed on
April 12, 2019

Yes, I would recommend this.

Great shipping process.

New equipment, unpacked but not set up yet. The shipping container and packing of equipment needs a few words of how excellent it was. It was hard to believe how well the shipping container was built and how well all fit inside.

Was this review helpful? 5 0


Reviewed on
March 30, 2019

Yes, I would recommend this.

You get what you pay for

Pros: Quality

Cons: Instructions for building the stand were hard to read.

Higher quality product.

Was this review helpful? 3 0


Reviewed on
June 15, 2017

Yes, I would recommend this.

Red Sea Reefer 425XL

Pros: Quiet, Easy installation, Great quality glass and stand.

Cons: $

Splurged on a high quality aquarium. Red Sea Reefer was just that...high quality. This aquarium was shipped fast, easy to install (including the stand). The tank is quiet and the sump is very efficient. Great purchase.

Was this review helpful? 16 0

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