Red Sea Reefer S-550 G3

Red Sea REEFER S-550 G3 – Premium Large-Format Reef System

The Red Sea REEFER S-550 G3 is a high-end, large-format reef system designed for hobbyists seeking professional-level stability, premium materials, and exceptional viewing clarity in a compact footprint. With an impressive 146-gallon (550 L) ultra-clear rimless display and a total water volume of approximately 180+ gallons (680+ L) including the sump, the S-550 G3 provides ample room for advanced aquascaping, mixed-reef ecosystems, and SPS-dominant builds.

Built with ultra-clear low-iron glass up to 19 mm thick, the S-550 G3 offers crystal-clear visibility and a sleek, modern presentation. Its reinforced marine-spec plywood cabinetry, paired with an internal aluminum bracing frame, ensures long-term durability, stability, and resistance to humidity and load stress—ideal for both residential and commercial installations.

The G3 engineering upgrades feature hydrodynamically optimized dual return outlets, a high-capacity overflow chamber, and a precision downflow valve, all designed for whisper-quiet operation and stable water movement. The oversized REEF-SPEC sump supports large protein skimmers, reactors, refugium sections, media chambers, roller mats, and high-output return pumps—giving you the infrastructure needed to support heavy bio-loads and demanding coral species.

With its commanding viewing panel, premium build, and advanced filtration architecture, the REEFER S-550 G3 is ideally suited for mixed reefs, large LPS and SPS colonies, and feature displays that require long-term reliability and visual impact.

Technical Specifications