Red Sea Reefer G2+ S850 Aquarium
SKU: 6349414725

Red Sea Reefer G2+ S850 Aquarium

Sale price$55777.50 Regular price$61975.00
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Description

Red Sea Reefer G2+ S850 AquariumRed Sea Reefer G2+ S850 Aquarium Red Sea Reefer G2+ S850 Aquarium is designed for hobbyists to create and manage their ideal reef tank with advanced filtration, water management, and an auto top off system. The REEFER G2+ series of reef ready aquarium systems comes in a huge variety of sizes, includes top of the line infrastructure, filtration, water management and the ReefATO+ system. It is designed to allow hobbyists complete freedom of choice to

Red Sea Reefer G2+ S850 Aquarium

Red Sea Reefer G2+ S850 Aquarium is designed for hobbyists to create and manage their ideal reef tank with advanced filtration, water management, and an auto top-off system.

The REEFER G2+ series of reef-ready aquarium systems comes in a huge variety of sizes, includes top-of-the-line infrastructure, filtration, water management and the ReefATO+ system. It is designed to allow hobbyists complete freedom of choice to use all their preferred or existing hardware in building the reef tank of their dreams.

G2+ Features

  • Includes a 3-in-1 ReefATO+ auto top-off system with temperature monitor and external leak detector
  • Fortified ultra-clear, beveled-edge glass with increased thickness
  • Extra-fortified plywood marine-spec laminated cabinets (with additional aluminum “floating tank” supports on REEFER 625 G2+ models and bigger)
  • Dual side-facing return pump outlets for better water distribution (On REEFER 350 G2+ models and bigger)
  • Large central overflow box to hide piping, with a large surface skimmer with removable weir comb for easy cleaning
  • Silent downflow system with enlarged rectangular inlet to reduce turbulence
  • Assembly-ready piping now with extra bulkhead connectors in both Metric and USA sizes for customized setups
  • New and improved high-precision valve on the downflow pipe for easier flow regulation and near-silent operation
  • Professional REEF-SPEC sump, including:
    • Mechanical filtration media compartment complete with micron filters and filter cups
    • Adjustable height skimmer chamber
    • Bubble trap
    • Plug & play ready for ReefMat 500 or 1200 Auto Filter Roller (sold separately)
    • Additional chamber for chillers, controllers, or other equipment (on most models)

New to the G2+ -- 3-in-1 ReefATO+

Every REEFER G2+ model includes a ReefATO+, an exceptionally reliable and smart auto top-off system. The ReefATO+ is more than just an ATO-- it also includes an accurate temperature monitor and external leak detector, coupled with a smart controller that connects to the ReefBeat ecosystem. 

  • Fully-featured online digital temperature monitor accurate to 0.1 degree
  • Reliable leak detector with audible alarm
  • Slimline multi-input titanium probe water level sensor
  • Strong magnetic corner mounting bracket
  • Precise water level monitoring
  • Built-in safety shutoffs under the following scenarios:
    • Sensor isn't connected
    • Pump runs dry
    • Leak is detected 
    • Pump runs longer than normal
  • Track water level and temperatures in the ReefBeat app
  • Powerful, quiet, and slim 1.8" diameter pump that fits in most ATO reservoirs
  • ReefBeat connected smart controller included

Extra-fortified Glass and Marine-Spec Cabinets

The G2+ series of REEFER aquariums are constructed from ultra-clear, beveled-edge glass with an increased glass thickness of up to 19mm. These strong glass tanks sit atop newly fortified cabinet stands made of plywood and with Marine-Spec, water-resistant lamination. Each cabinet stand follows the contours of the aquarium glass, with the larger REEFER G2+ models featuring an additional “floating tank” aluminum support. Adjustable leveling feet & stainless steel hinges ensure a lasting and durable stand for your dream aquarium.

Improved Water Management & Plumbing

Up top, the G2+ REEFER systems employ a large overflow box with dual side-facing return pumps for optimal water circulation and increased surface skimming. The overflow box includes a lid which hides plumbing components, as well as easily-removable weir combs for quick cleaning and improved surface skimming. Water then exits from the overflow box and travels down an enlarged and rectangular inlet to the downflow pipe, allowing for reduced turbulence & quieter operation. All G2+ models also include a high precision valve on the downflow pipe, allowing for simple regulation to further tune your flow.

Reef-Ready Sump– Now ReefMat Compatible

As with the previous generation of REEFER, the G2+ sump includes a mechanical filtration compartment complete with micron filter sock(s) and filter cup(s) to keep large pieces of debris and detritus from clogging pumps and other pieces of equipment. This chamber can be alternatively used to house a ReefMat 500 or 1200-- no modifications required! Water flows from the filtration chamber into the adjustable-height skimmer compartment, where the water will be kept at a steady level to aid in the best performance for your choice of skimmer, or any other filtration components that you choose to include. The water will then flow through the final bubble trap and into a chamber where the return pump (not included) can be placed to pump water back through the Reefer tank's return plumbing.

3+2 Extended Warranty Plans

All REEFER aquariums include a standard 2-year warranty. Register your brand-new Red Sea system within 90 days of the original date of purchase and turn your standard 2-year warranty into 3 years at no extra cost. 1-2 year extended protection plans are also available for purchase through Red Sea's warranty registration page. That's up to 5 years of worry-free protection!

Specifications

  • Display Tank Dimensions - 71"L x 25.6"H x 26.75"W
  • Display Tank Volume - 180 Gallons
  • Total System Height - 60"
  • Total System Volume - 225 Gallons
  • Sump Volume - 45 Gallons
  • Front Glass Thickness - 3/4"
  • Side Glass Thickness - 3/4"
  • Bottom Glass Thickness - 3/4"
  • ATO Pump Power - 6-10W
  • ATO Pump Max Flow - 75 gph
  • ATO Pump Max Head - 8ft

NOTE: The Deluxe models include 3x ReefLED 160 & Mounting arms & ATO System 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 6349414725

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PegFlint
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★★★★★ 5
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We’ve gone through more dog toys than I care to admit, because our dog treats them like a personal demolition project! Since she’s a very aggressive chewer, I usually don’t expect toys to last long, so these balls were a really pleasant surprise. They were an instant hit for fetch, chase, and chew time. I love that they have a nice bounce that keeps playtime fun and unpredictable, and the bright colors make them easy to spot in the yard instead of disappearing into the grass. Best of all, they’ve held up far better than many other dog toys we’ve tried. Normally I’m cleaning up shredded toy remains within minutes, but these have proven to be much tougher. Of course, no toy is truly indestructible with a determined chewer, but these have definitely impressed me and earned their place in our toy rotation. If you have a dog that loves interactive play and tends to destroy toys at record speed, these are absolutely worth trying. Easy 5 stars from our house!
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Reviewed in the United States on May 26, 2026
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BLG
Charlottesville, US
★★★★★ 5
Fun and durable toy for dogs of all sizes
Size: 3 PCS
We have three dogs and one of their favorite kinds of toys is balls. These are the perfect size that all three of the dogs can play with them. We have size ranges from pug to Golden Retriever. Even the pug can carry one around. Mostly she just chases them across the floor. They are durable plastic that the dogs can chew on and so far have not punctured. They also haven't started to flake or splinter like some plastic will when it gets older. I like the bright colors because that makes it easier to find in the grass. They aren't extremely hard so if someone inadvertently gets hit with one it isn't terribly painful. They are a good weight to be able to throw repeatedly without getting a tired arm and yet they aren't lightweight so much that they don't go where you aim. When they get too dirty I just pop them in the dishwasher. I appreciate the value of getting three balls in one package.
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Reviewed in the United States on May 23, 2026
T
Trevor from NC
Massapequa, US
★★★★★ 5
Simple Dog Toys Done Well
Size: 3 PCS, Size: 3 PCS
Honestly, as far as simplicity goes, this is simplicity done right. Three simple decently sized toys in a nice bright package. They're the right size, they're the right texture, and they feel fairly well-made. They do still have that ugly little manufacturing seam running across them, so that's noticeable, but otherwise they're perfectly fine. No real issues. Nice texture, good variation of texture, and the colors are vibrant. Again, they're the right size. They're firm but not overly hard. Kind of almost like a baseball where there's a little bit of give to them, but not like they're made out of stone. So no major problems with this one. My dog has been having a fantastic time with them over the past few days.
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Reviewed in the United States on May 26, 2026
G
germank106
Pawtucket, US
★★★★★ 5
Dog loves these.
Size: 3 PCS
The Velcro Pup (so named because she sticks to my side like Velcro) is a 32 pound Border Collie Mix with endless energy and boundless curiosity. She loves bright colors and ripping the stuffing out of all her stuffed toys and distributing it around the house. To combat that and to give her lots of playtime, I ordered these Rubber Balls. They are soft enough for her to carry around and just the right size for her to pick up and bring them to me to throw. There is a bit of texture on the Balls but it doesn't bother her the least bit. They do get slobbery after playtime but a quick rinse with water takes that right off. I do like the bright colors because the Balls are easy to see in the grass. I also use these to re-inforce training instead of food. Dog goes for it every time.
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Reviewed in the United States on May 20, 2026
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Lycette martinez
Bozeman, US
★★★★★ 2
Not the best for big dogs
Size: 3 PCS
Very tiny balls, didn’t last long with my big dogs. They are very bouncy but overall don’t last long if you have a big chewer.
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