Red Sea Reefer G2+ S 850 Complete System (225 Gal) – Black
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Red Sea Reefer G2+ S 850 Complete System – Black (225 Gallons)
The Red Sea Reefer G2+ S 850 Complete System delivers the perfect balance of size, strength, and smart reef tech—tailored for reefers who don’t settle.
Massive Display of the Red Sea Reefer G2+ S 700, Built to Impress
This isn’t your weekend build. The S 850 is built for serious reefers ready to go big.
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179.6-gallon display tank for expansive aquascaping
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224.5-gallon total system volume including sump
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45-gallon in-cabinet sump designed for filtration upgrades
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Rimless ultra-clear glass, 0.75" thick on all sides
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Sturdy marine-spec cabinet included with a sleek black finish
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Tank dimensions: 70.9” L x 26.8” W x 25.6” H
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Total system height: 60.2” for a commanding display presence
Smart Features for Effortless Control
The G2+ series comes ready for the digital reefkeeping era—just add your corals and tech.
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Integrated WiFi via the ReefBeat App for system monitoring
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ReefATO+ Kit included with titanium sensor and temp monitor
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Bubble trap sponge reduces microbubbles in display
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Dual return outlets provide balanced, reliable flow
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Micron filter bags (2x) included for clean mechanical filtration
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ReefMat compatible sump (not included, but ready to plug in)
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DLX version available with optional 3 ReefLED 170s
What’s Not Included (But Customizable)
The system comes reef-ready, letting you choose your favorite gear.
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Protein skimmer not included
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Main return pump not included
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Circulation pumps not included
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Lighting not included (DLX model adds optional ReefLEDs)
This open approach means you control the system’s final personality—go SPS-heavy, soft coral chill, or mixed reef madness.
Specifications At-a-Glance
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Display Tank Volume: 179.6 gal
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Total Volume: 224.5 gal
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Sump Volume: 45 gal
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Glass Thickness (All Panels): 0.75"
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Dimensions (L x W x H): 70.9" x 26.8" x 25.6"
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System Height: 60.2"
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Nominal Total Output: 510W
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ReefATO+ Kit: Included
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ReefMat: Ready (not included)
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Filter Bags: Two 225-micron bags
Why Should You Choose the Red Sea Reefer G2+ S 850?
If you're serious about reefing—or want room to grow into the hobby—this system checks all the boxes.
With the space of a commercial display and the flexibility of a home reef, the S 850 is ready for your dream build.
It’s modern, modular, and downright stunning.
LINKS:
- Search ALL Red Sea Brand products
- Lighten and Brighten your Aquarium with Lighting and LED's!
- Check out our Dosing Pumps available!
- Bring some color and life to your Aquarium with some Fish Friends!
- Wavemakers for Water Circulation available!
- Create the Aquarium of your Dreams with the Builder Tool!
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