SKU: 67832340368

Red Sea Reefer G2+ 525 Aquarium

Sale price$28575.00 Regular price$31750.00
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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23

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Description

Red Sea Reefer G2+ 525 AquariumRed Sea Reefer G2+ 525 Aquarium Red Sea Reefer G2+ 525 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

Red Sea Reefer G2+ 525 Aquarium

Red Sea Reefer G2+ 525 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
  • Rimless 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 rimless and 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 - 59"L x 22"H x 23.6"W
  • Display Tank Volume - 112 Gallons
  • Total System Height - 56"
  • Total System Volume - 143 Gallons
  • Sump Volume - 31 Gallons
  • Front Glass Thickness - 5/8"
  • Side Glass Thickness - 5/8"
  • Bottom Glass Thickness - 5/8"
  • ATO Pump Power - 6-10W
  • ATO Pump Max Flow - 75 gph
  • ATO Pump Max Head - 8ft

NOTE: The Deluxe models include 3x ReefLED 115 & 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: 67832340368

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S. Berg
Los Angeles, US
★★★★★ 5
Good balls
Color: S6-glow
My dog is a chewer, and these have held up for close to a year actually a pretty good product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
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nanny america
Birmingham, US
★★★★★ 3
Disappointed
Color: S6-muti-color
These were great for about 20 minutes then they stopped squeaking...we have 2 left that I have saved but the other 4 do not squeak anymore...disappointed as my dog loves to squeak things...would not buy these again...My dog is only an 8lb dog too...but he can still play with the balls without the squeak...
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Reviewed in the United States on April 26, 2026
J
Verified Purchase
joymom
Lowell, US
★★★★★ 5
Great Value for a ball my dog loves!
Color: S6-muti-color
I wish these ball were in the subscription program! My dog gets sooo excited by the new ball, but her interest in things lasts for a few days. She kills the squeak within 11minutes, but the squeaker stays in place rather than becoming a chocking or swallow hazard, and she still loves to chew it. Next, we must throw the ball approximately 723 times the first day, possibly 496 times on day 2, and just 3- 4 on day 3, at which point she will chase the ball before hollering "it's over here if you need it," while she checks on the chipmunk den. We currently have 17 of these balls in our yard (because we have given several leftovers to a less discriminating doodle next door). These balls hold up really well, get her extremely active for the first couple of days, and are a much cheaper than doggie daycare (after an active morning with a new ball, she is happy to chew on it and sleep much of the day). I always have these on hand!
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Reviewed in the United States on November 22, 2025
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Verified Purchase
Michelle
Draper, US
★★★★★ 4
Pieces chewed off
Color: white & green
My Aussiedoodle loves it. I throw it down the hallway, it bounces crazy, and he chases it. The only complaint is that he can't chew much of the ball part. So now I have to have it put away and brought out for special playtime.
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Reviewed in the United States on April 9, 2026
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Betsy
Houston, US
★★★★★ 5
One of the best dog toys I’ve found
Color: Blue, Color: Blue
My Great Dane puppy- at 140lbs, loves this!! We had another one that was plastic and it worked ok but this is so much better! Interactive, soft to play with, battery last a long time & he does not get bored with it. Besides is plush lamb chops, best toy ever bought for him.
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Reviewed in the United States on May 25, 2026

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