Red Sea Reefer S-850 G3+ 180cm Aquarium & Black Cabinet - 850L

What is the Red Sea REEFER S-850 G3+ with Black Cabinet?

Looking for a reef aquarium you can equip your own way? The Red Sea REEFER S-850 G3+ with Black Cabinet gives you a 180 cm euro-braced display tank, a 170 L in-cabinet sump and a black cabinet in one 850 L system. Red Sea positions it as one of Red Sea's Premium S models, with a deeper and wider display tank.

Key Features

• 680 L display tank (180 x 68 x 65 cm, excluding light unit) with a 170 L in-cabinet sump
• Return outlets: 2 x 32 mm (single or dual pump), with a ReefGate high-precision gate valve on the downflow pipe
• ReefControl Pro controller with ATO module and integrated temperature sensor included
• Black cabinet; aquarium sits on a floating look aluminium support
• Ultra-clear glass, 19 mm on the front, sides, bottom and back
• Euro brace + bottom brace for strength, bonded with euro-silicone

What are the features of the Red Sea REEFER S-850 G3+?

On the REEFER S-850 G3+, ultra-clear glass is bonded with euro-silicone and supported by a euro brace + bottom brace. The enlarged downflow inlet and ReefGate valve are designed for quieter operation, and curved return outlets help distribute water. This model uses Red Sea's split-sump design: the main sump is refugium-ready with an adjustable-height skimmer chamber, and an extension sump can act as a frag tank, a larger refugium or extra filtration, or be disconnected for use as an RO reservoir. The cabinet has an aluminium superstructure with a replaceable exterior and hidden adjustable feet. A slide-out control panel keeps controllers and other equipment tidy.

What do I need to add to the Red Sea REEFER S-850 G3+?

Supplied as an aquarium, cabinet and sump, so lighting, circulation, a return pump (ReefRun G2 12000 recommended by Red Sea), a protein skimmer and ReefMat need to be added. The included ReefControl Pro works with ReefSense probes, so you can add monitoring as you build.

This model uses Red Sea's split-sump design: the main sump is refugium-ready with an adjustable-height skimmer chamber, and an extension sump can act as a frag tank, a larger refugium or extra filtration, or be disconnected for use as an RO reservoir.

Red Sea backs the REEFER S-850 G3+ with a standard 3-year warranty, which extends to 5 years when you register a new unit within 90 days of purchase.