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Home » Saltwater Aquarium Supplies  » Filters  » Inline & Specialty Filters  » Chemical Reactors  »  NextReef MR1 Monster GFO and Carbon Filter Media Reactor
NextReef MR1 Monster GFO and Carbon Filter Media Reactor

NextReef MR1 Monster GFO and Carbon Filter Media Reactor

Average Rating 5 5
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NextReef MR1 Monster GFO and Carbon Filter Media Reactor Information

Product Manuals & Documentation

NextReef MR1 Monster Media Reactor

NextReef Reactors Loom Large Over the Competition! The MR1 families of Media/Substrate Reactors feature a massive 4-inch reaction chamber. The extra wide design maximizes water to media contact, increasing efficiency and minimizing dead zones in the reactor.NextReef Reactors have the largest capacities around, giving you the ability to run large amounts of media, or multiple products simultaneously. They`re ozone-safe, and perfect for phosphate control, de-nitrification or fluidized sand filtration. The NextReef MR1 stands over 23 inches tall... that`s over two gallons, big enough for large reef systems - up to 600 gallons.

Every NextReef Reactor is hand-crafted in the USA from the highest quality materials, and CAD engineered / CNC cut for a precise fit.

Recommended Tank Size: 600 gallons Marine / 1200 gallons Freshwater
Recommended Flow Rate: up to 300GPH
Height: 23" Overall Height / 21" Reaction Chambers (585mm / 535mm)
Footprint: 12.5" x 6" (325mm x 150mm)
Reaction Chamber: 21" x 4" (Dual) (535mm x 100mm)
Total Capacity: 465 cubic inches / 2.0 gallons / 255 fluid ounces / 7.6 litre
Inlet / Outlet: 1/2" 90 Degree Barb Fittings - fits standard 1/2" ID tubing

Manufacturer Info

NextReef Systems
NextReef Systems operates a 4,000 square foot state-of-the-art plastics manufacturing facility in Bradenton, FL. The combination of precision CNC and laser cutting capabilities with master acrylic craftsmanship allow them to bring you the highest quality products for your aquarium, large or small. All of their products are made in the USA, from domestically sourced material (whenever possible!).

NextReef MR1 Monster GFO and Carbon Filter Media Reactor Reviews

Average Rating
(5 reviews)
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Reviewers Rating Excellent!

Posted: 6/22/2015 from HOBE SOUND, FL UNITED STATES
5.0 5
Experience Level: Beginner

Comments: The MR1 Monster reactor is incredible.. Much better as a single unit with dual chambers, for stability, rather than 2 individual reactors. It's made well in a thick gauge acrylic that will take moderate abuse, bumps and bruises. The water capacity is a full 2 gallons. Running both chambers on 1 pump I did find you need MORE than the recommended 300GPH to get movement in both media. I'm using a 420 GPH pump, but by the time you hook up he hoses and the distance the water has to travel until it returns to the tank it decreases considerably.. Better to go bigger and use a flow regulator or ball valve. Its very easy to understand and set up even for a beginner like me.

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Reviewers Rating Excellent!

Posted: 10/15/2014 from Kansas City, MO UNITED STATES
5.0 5
Experience Level: Expert

Comments: Wow, I was really blown away by the build quality of these reactors. Very easy setup, all parts and fittings included (except hose and pump). I filled them with media, hooked up the pump, and surprise, NO LEAKS! I am very happy with them (I bought two)

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Great high quality reactor

Reviewers Rating Excellent!

Posted: 2/10/2012 from Florida, UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: This reactor is one of the best reactors I have seen. The quality is outstanding and everything works great. Don't bother getting any other reactor. This thing is huge, it has 2 large chambers and can accommodate almost any tank.

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Exceptional Value

Reviewers Rating Excellent!

Posted: 10/12/2011 from GRASONVILLE, MD UNITED STATES
5.0 5
Experience Level: Expert

Comments: I have two of these reactors. One has GAC and the other has GFO. Both chambers on both reactors are aligned in series. Alot of cabability for my 400 gallon system. IMO, these reactors are of exceptional value. Priced very reasonable for the exceptional quality, appearance and ease of use. I have had the high priced Deltec and I much prefer Next Reef.

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Reviewers Rating Excellent!

Posted: 1/8/2009
5.0 5
Experience Level: Expert

Comments: I'm using one of these with GFO for phosphate and activated carbon. This reactor has a ton of room, and you can plumb the two chambers several different ways. Quality is outstanding - it looks awesome under my tank!

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