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AquaMaxx GFO and Carbon Filter Media Reactor

AquaMaxx GFO and Carbon Filter Media Reactor

Average Rating 4.5 5
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AquaMaxx GFO and Carbon Filter Media Reactor Information

Product Manuals & Documentation

AquaMaxx Fluidized Media Reactors

AquaMaxx Fluidized Media Reactors are multi-purpose aquarium water filters specially designed for use in marine and reef aquaria. Insert your media of choice to help eliminate organic pollutants, odors, discolorations and algae fuels.

Fluidized reactors, also commonly referred to as phosphate or media reactors, are one of the easiest and most effective ways to use filter media in a saltwater aquarium system. These versatile filters are capable of running several different types of filter media, from activated carbon and granular ferrous oxide to resin and nitrate-reducing media.

The up-flow design of AquaMaxx Fluidized Media Reactors helps to keep filter media suspended and evenly dispersed to provide maximum contact time between your aquarium water and the media inside the reactor. Water is introduced into the bottom of the filter and then gravity pushes it upward through the media and back out into your tank.

AquaMaxx Fluidized Media Reactors are available in two sizes: Standard and XL. They are computer designed, precision-cut and made of polished A-class acrylic. All AquaMaxx media reactors are rigorously tested in saltwater environments to ensure reliability, efficiency and affordability.

AquaMaxx Fluidized Media Reactors require a small pump/powerhead and tubing (sold separately) to push water through the reactor. You can plumb the reactor using 1/2" or 3/4" flexible vinyl tubing. Using a ball valve is highly recommended because it will allow you to regulate the flow rate. Since different types of media have different flow rate requirements, be sure to reference the manufacturer’s suggested flow rate for the media you intend to use (it’s usually listed in the product description and/or on the product label).

An optional hang-on adaptor (sold separately) is available for additional mounting configurations. For best results, use AquaMaxx Phosphate Out Granular Ferrous Oxide (GFO), AquaMaxx Carbon One Activated Carbon or similar aquarium filter media.

  • Reactor Footprint: 5.5" x 5.5"
  • Chamber Diameter: 3.94"
  • Reactor Height: 11.5"
  • Chamber Capacity: 0.18 gallons
  • Using GFO: up to 250 gallons
  • Using Activate Carbon: up to 150 gallons
  • Inlet/Outlet: 1/2" or 3/4" hosebarb

Manufacturer Info

AquaMaxx is a Southern California-based aquarium supply company that entered the market in mid-2008 with a line of affordable metal halide bulbs. The brand quickly gained recognition as word spread about the high quality and low cost of their lamps. In 2009, AquaMaxx released a line of aquarium filter socks and, in early 2010, unveiled an assortment of high-performance protein skimmer accessories and upgrades.


AquaMaxx Limited Manufacturer Warranty
AquaMaxx will warrant all AquaMaxx products to be free from manufacturing defects for one year from the original purchase date when purchased through an authorized AquaMaxx retailer. This warranty does not cover any damages caused by misuse, neglect, alterations or improper handling/transport/maintenance/installation. AquaMaxx does not cover personal injury, personal loss, or other damages associated with the use of these products.

AquaMaxx GFO and Carbon Filter Media Reactor Reviews

Average Rating
(5 reviews)
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GFO reactor

Reviewers Rating Great

Posted: 10/17/2014 from LEANDER, TX UNITED STATES
3.5 5
Experience Level: Expert

Comments: This GFO Reactor is just as good as the next reef MR1. It is a nice reactor very sturdy. It would've been nice if it came with all the accessories for that price... It is like a lot of other reactors where if not tuned properly or level enough the media will have issues tumbling. If you have it setup right it is a great reactor!

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AquaMaxx Media Reactor

Reviewers Rating Excellent!

Posted: 9/2/2014 from SLIDELL, LA UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: Very good quality, sturdy, and extremely easy to install and set-up. Took a little time to fine tune the ball valves in order to achieve the proper flow. Within 1 week I was measuring undetectable ppm of phosphate running GFO in one of the media reactors. First time purchaser of AquaMaxx products and I am impressed! In my opinion, it is a good, comparable reactor compared to the upper end ones at much more cost.

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Reviewers Rating Excellent!

Posted: 7/11/2014 from FIELDS LANDING, CA UNITED STAT
5.0 5
Experience Level: Intermediate

Comments: Haven't hooked them up yet but they are made really nice. Worth every Penney

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AquaMaxx GFO and Carbon Filter

Reviewers Rating Excellent!

Posted: 10/17/2012 from MINOOKA, IL UNITED STATES
5.0 5
Experience Level: Expert

Comments: All I can say about the Aquamaxx brand in WOW don't waste your money on any other brand. I have the XL model its built like a tank! You may think the 100$ price tag is a lot but just wait until ups shows up you'll fall in love with all things Aquamaxx. I also have the new Aquamaxx EM200 Skimmer yes that is the new one that has been on back order for WEEKS. All I can say about it is OMFG !!!!! I WILL NOT BUY ANYTHING OTHER THAN AQAUMAXX FROM NOW ON!!!

15 of 17 People found this review helpful, did you? Yes No

Best Value Reactor

Reviewers Rating Excellent!

Posted: 1/29/2012 from Seattle, WA
4.5 5
Experience Level: Intermediate

Comments: I have used most of what the market currently offers in the way of media reactors. My current reactors were from Avast Marine MR-5's. Super well-built, but a pain to setup and change media, etc. I tried the Aquamaxx, because its cheap - not cheap as in Two Little Fishies, cheap in price, but decently priced. After getting the phosphate removal media washed through, this thing was up and running in no time. Make sure to purchase the optional bracket mount if you don't have sump space. With the mounting bracket you basically have the best of both worlds: the easy mounting ability of the Phosban reactor and the build quality coming close to the Avast MR-series. When changing media, you still have to pull the top off, dump and wash out, etc. However, unlike the Avast reactor, the media doesn't slip through and end up underneath the media sponge and plate. I could never get all of the media to stay above the media line on the Avast reactor - so frustrating. I just gave up on them. Glad this one work out. Highly recommended!

63 of 66 People found this review helpful, did you? Yes No

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