Red Sea Reefer S-550 G3 Aquarium System

The Red Sea Reefer-S G3 range is engineered for advanced reef systems where structural strength, water volume, and equipment capacity are critical. Designed for demanding coral systems and higher bioloads, Reefer-S builds on the Reefer platform with major construction upgrades for long-term rigidity at larger sizes.

Reefer-S G3 systems feature significantly thicker ultra-clear glass, reinforced euro bracing, and additional bottom bracing to provide exceptional stability—ideal for heavy aquascapes, high-energy circulation, and dense coral growth.

The larger sump layout and professional plumbing architecture create flexibility for skimmers, reactors, refugiums and automation. Combined with Red Sea’s fine-control gate valve plumbing, Reefer-S delivers a future-proof foundation for serious mixed reefs and SPS-dominant builds.

If you’re planning a high-performance reef with long-term growth in mind, Reefer-S G3 is designed to support it.

What’s Included

• Ultra-clear glass display aquarium
• Marine-grade cabinet with integrated leveling system
• Red Sea precision sump system (model dependent)
• Pre-installed reef-ready plumbing with fine-control gate valve
• ReefATO+ Automatic Top-Off system (included as standard)

Specifications (Metric)

Visualise in Your Home (AR)

See a live, actual-size aquarium system in your own space using Red Sea’s Augmented Reality tool.

Launch the Red Sea AR experience

EMA Livestock Voucher

Includes an EMA Livestock Voucher valued at $393.

Why Buy from EasternMarine Aquariums?

EasternMarine Aquariums is New Zealand’s premier saltwater aquarium importer. Our team can help you select the right system, pair equipment correctly, and plan livestock so you can build a successful reef from day one.

We take livestock seriously. That's why we don't sell anything we wouldn't be comfortable putting in our own tank.

As we are direct from source, we import and sell direct to the public. This means you can buy with confidence knowing EMA prides itself on excellent handling and conditioning protocols.

Fish

All our fish held in a quarantine system for a minimum of 3 weeks. During this time, regular water changes are performed, and twice daily (or sometimes more) feedings are performed.

Copper is dosed and checked twice a day for ich and velvet.

During this treatment fish are given formalin baths for brooklynella and a minimum of 3 praziquantel doses is performed for flukes.

Coral

Our coral is quarantined for a minimum of 3 weeks, just like fish. During this time, regular water changes are performed, water testing done, and once a month a Fauna Marin ICP Total is performed.

Corals are inspected for pests/general health and are provided with a pest dip once a week for at least 3 weeks.

If we see signs of pests, the quarantine period is extended and/or additional dips are performed

If coral is bleached/unhealthy, it will remain in quarantine until healthy enough to sell.