The Red Sea REEFER S-850 G3 Black is a premium, high-capacity saltwater aquarium system engineered for dedicated reef hobbyists. This sophisticated setup provides a robust and flexible foundation, allowing users to fully customize their filtration, lighting, and other essential equipment to create a thriving and beautiful reef environment. It integrates thoughtful design with advanced features to streamline the reefkeeping experience. This impressive system features a 179.6-gallon eurobraced glass display tank, offering enhanced structural support and peace of mind. It includes a versatile glass sump compatible with Red Sea's ReefMat and REEFER DC skimmers, alongside ready-to-use plumbing equipped with the innovative ReefGate flow valve for precise water control. Also incorporated are the ReefATO+ Auto Top Off system and a convenient slide-out control panel, all housed within a durable aluminum Marine-Spec cabinet with adjustable, hidden feet and dual side-facing return outlets. Display tank dimensions are 70.9 inches long, 26.8 inches wide, and 25.6 inches high. The REEFER S-850 G3 Black is ideally suited for experienced reef keepers who desire a large, high-quality, and highly customizable aquarium system. Its substantial volume and advanced integrated features, such as the ReefATO+ and ReefGate valve, simplify maintenance and allow for intricate reef designs. Hobbyists seeking a premium, modern aesthetic combined with the flexibility to choose their own advanced equipment will find this system an excellent choice for building a spectacular and easy-to-manage reef.