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Red Sea

REEFER S-550 G2+ (118 Gallon)

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1 in stock

🔴 AQUARIUM SHIPPING INFORMATION

This aquarium is available for local pickup. Freight shipping may be available for aquariums that remain in their original manufacturer packaging and are not currently on display.

Please contact us for availability and a freight shipping quote.

Regular price $3,500.00 USD
Regular price $5,299.00 USD Sale price $3,500.00 USD
Sale Sold out
  • Description
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** This is a Brand New in Crate leftover unit.  We will include the new G3 Gate valve as well with purchase.  

Red Sea REEFER-S 550 G2+ Aquarium, Stand and Sump System

The Red Sea REEFER-S 550 G2+ is a premium reef-ready aquarium system designed for reef keepers who want extra depth, substantial water volume, and a clean, modern presentation without moving into an oversized footprint.

With a 47.3" long x 26.8" deep x 25.6" high display, the REEFER-S 550 provides significantly more front-to-back aquascaping space than many traditional four-foot aquariums. The added depth makes it easier to create layered rockwork, open swimming areas, and a more natural reefscape while maintaining excellent viewing from the front and sides.

The REEFER-S series combines Red Sea's ultra-clear glass aquarium construction with a reinforced marine-spec cabinet, aluminum internal frame, integrated sump filtration, precision plumbing, and dedicated equipment management.

Key Features

  • 145.1-gallon total system volume
  • 118.4-gallon display aquarium
  • Extra-deep 26.8" footprint for enhanced aquascaping
  • 19mm / 3/4" ultra-clear glass
  • Reinforced aluminum cabinet superstructure
  • Integrated reef-ready sump filtration
  • High-precision downflow valve for quiet operation
  • ReefMat-ready filtration compartment
  • Adjustable skimmer chamber
  • Dedicated refugium space
  • Slide-out equipment control panel
  • ReefATO+ automatic top-off system included
  • Available in Black or White
  • Eligible for Red Sea's extended warranty when registered according to manufacturer requirements

Aquarium Features

  • Ultra-clear front and side glass provides excellent clarity and an unobstructed view of the aquarium.
  • 19mm / 3/4" glass construction provides the strength required for the larger dimensions of the REEFER-S platform.
  • The REEFER-S design features an elegant internal frame for additional structural reinforcement while maintaining Red Sea's clean, contemporary appearance.
  • Extra 26.8" front-to-back depth provides additional room for creative aquascaping and greater separation between the rockwork and viewing panels.
  • Central overflow design keeps plumbing discreet while providing effective surface skimming.
  • Removable overflow comb simplifies cleaning and routine maintenance.
  • Assembly-ready plumbing eliminates the need for gluing during normal installation.
  • Red Sea's high-precision downflow valve allows fine adjustment of the drain flow for quiet operation.

Cabinet & Equipment Management

  • Marine-spec cabinet is reinforced with a robust aluminum internal superstructure for increased strength and long-term durability.
  • Moisture-resistant cabinet construction is designed specifically for use beneath a marine aquarium.
  • Dedicated slide-out control panel provides an organized location for controllers, power supplies, dosing equipment, and other aquarium electronics.
  • Equipment compartments provide generous space for filtration and reef-system hardware while keeping equipment concealed beneath the aquarium.
  • Integrated cable-management provisions help maintain a clean and organized installation.

Sump Filtration System Features

  • Large in-cabinet sump provides approximately 26.7 gallons of filtration volume.
  • Removable mechanical filtration compartment is designed for compatibility with Red Sea ReefMat automatic filter rollers.
  • Traditional mechanical filtration options can also be used depending on the chosen system configuration.
  • Adjustable-height skimmer chamber accommodates a wide variety of protein skimmers.
  • Removable sump divider allows part of the sump to be configured as a dedicated refugium.
  • Bubble-management and baffle system helps maintain stable water levels between sump sections.
  • High-precision drain valve provides fine control over overflow flow and helps maintain near-silent operation.
  • Integrated return chamber provides space for the return pump and additional equipment.

ReefATO+ Automatic Top-Off

The REEFER-S 550 G2+ includes Red Sea's ReefATO+, providing an integrated automatic top-off and monitoring solution.

ReefATO+ combines:

  • Automatic freshwater top-off
  • Precision water-level sensing
  • Temperature monitoring
  • Leak detection
  • Smartphone connectivity through the ReefBeat ecosystem

This helps maintain stable salinity while also providing additional monitoring and protection for the aquarium system.

Tank Specifications

  • Display Dimensions: 47.3" L x 26.8" W x 25.6" H
    (120 x 68 x 65 CM)
  • Display Water Volume: 118.4 gallons (448L)
  • Glass Thickness: 19mm / 0.75"
  • Front Glass: Ultra-clear
  • Side Glass: Ultra-clear
  • Total System Volume: 145.1 gallons (549L)

Sump Specifications

  • Sump Water Volume: Approximately 26.7 gallons (101L)
  • Mechanical Filtration: ReefMat-ready
  • Adjustable Skimmer Chamber: Yes
  • Refugium Section: Yes
  • Automatic Top-Off: ReefATO+ included

System Specifications

  • Total System Height: Approximately 60.2"
  • Cabinet Construction: Marine-spec plywood cabinet with reinforced aluminum superstructure
  • Control Panel: Slide-out control panel included
  • Available Cabinet Colors: Black or White

What's Included

  • Red Sea REEFER-S 550 G2+ Aquarium
  • Reinforced Marine-Spec Cabinet
  • Aluminum Internal Cabinet Superstructure
  • Pre-configured Sump Filtration System
  • ReefMat-Ready Mechanical Filtration Compartment
  • Adjustable Skimmer Chamber
  • Removable Refugium Divider
  • High-Precision Downflow Valve
  • Return Plumbing
  • ReefATO+ Automatic Top-Off and Monitoring System
  • Slide-Out Equipment Control Panel
  • All Required Aquarium Plumbing Components

Please Note: Return pump, protein skimmer, lighting, circulation pumps, and ReefMat are not included with the standard REEFER-S 550 G2+ system unless specifically stated as part of a bundle.

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