REEFER XL 425 Aquarium System (88 GAL) - Red Sea

Red Sea REEFER™ Systems

Rimless reef-ready systems for advanced hobbyists. Red Sea’s REEFER™ series of Reef Aquarium Systems provide advanced hobbyists with a solid foundation for building a fully featured reef or marine aquarium.

This series combines a contemporary, rimless, ultra-clear glass aquarium with a stylish cabinet and a comprehensive water management system including a professional refugium-ready sump with integrated automatic top-up and Red Sea’s unique silent down-flow system.

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.

The REEFER XL models are 57.5cm (22.6″) wide and 55cm (21.6″) high and are available in 120cm (47″) long /425 liter (88 gal) capacity or 150cm (59″) long/525 liter (108 gal).

Features of the Red Sea REEFER™ include:

• Rimless, ultra-clear, beveled 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

REEFER™ Specification

REEFER™ aquariums 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 marine-spec laminated cabinet that houses the sump, (and also includes a dedicated, vented space for chillers) is smartly finished with weatherproof, epoxy-painted doors.

REEFER™ Water Management System 

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.



On entering the sump the water passes through a 225 micron mechanical filter bag, before entering the filtration compartment that maintains a constant water height, making it suitable for all skimmers and other reactors. In order to remove any air bubbles that may have escaped from the skimmer, the water passes through a bubble-stripping cascade on its way to the return pump chamber.

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.

New and improved Refugium-Ready Sumps (except REEFER™ 170)

• An adjustable height skimmer chamber, enabling you to set the water level for optimal skimmer performance.
• A “Refugium Ready” sump with two pre-set positions allows you to decide how much of the sump you want for your skimmer and other reactors and how much as a dedicated refugium chamber.
• Micron filter bags and filter cups
• Larger RO liter reservoirs that can be slid aside when necessary for pump maintenance.
• Down-flow valve conveniently located at the front of the cabinet.

REEFER™ XL 425 Technical Data

*Note: The Deluxe model incorporates the added LED lighting system.

All Red Sea aquarium systems are shipped on a pallet free of charge directly from a distribution center to anywhere in the contiguous U.S.