CPR Aquatics

Large AquaFuge2 Hang on Back Refugium with LED Lighting

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AquaFuge2 External Hang On Back Refugium with LED lighting - Large

Water Capacity: 4.7 Gallons

Dimensions (not including light or hanging bracket): 25" L X 4.5" W X 12" T

Overall Width (including hanging bracket): 7-3/4"

Max. Tank Thickness for Mounting: 1-3/4"

13 Watt LED Light (22.5" x 1.25" x .5" light only)


Includes NEW LED Lighting

New Style Outlet

Includes powerhead


Refugiums are a great option for growing algae to help control nutrients, as well as ideal conditions for harboring micro fauna.  With three different sizes the AquaFuge2 is a simple to use hang on back refugium.  With a recently redesigned black acrylic backing and unique baffle system, keeps the algae and substrate in the refugium and not the display tank. 

Refugiums are also a great way to introduce new fish or corals to a tank while giving them a place to feed and acclimate to a new system. 


Whats Included

1x Refugium Body

1x Tunze Comline 900 Pump

1x Inlet Assembly




Manual Owners Manual

More Information
UPC 646392044118
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Product Questions

Can you specify the dimensions required behind the tank? The dimensions are listed in the description, but it is not clear if this is just what is behind the tank or also included the pump and return inside the tank.
Question by: Kris on Mar 6, 2023, 4:04 PM
The dimensions for this product do not include the hanging or internal portions, it will stick out 4.5" from the back of the tank.
Answer by: William Reed (BRS Staff) on May 12, 2023, 10:21 AM
So I have the waterbox marine x 90. 3 and glass at 1/2 thick will the large work on my tank even thou it is rimless. ? DT is 60 gallons ?
Question by: Dean on Nov 5, 2022, 3:22 PM
The Large AquaFuge 2 can be hung on a rimless tank and should work fine on your Waterbox.
Answer by: Scott F. (BRS Staff) on Nov 9, 2022, 4:37 PM
Will this fit on a tank that has trim on the top?
Question by: Jason on Nov 27, 2021, 3:42 PM
Hello, The AquaFuge 2 can accommodate rim sizes up to 2” wide. Thanks
Answer by: Christian Jimenez (BRS Staff) on Nov 28, 2021, 12:15 PM
Can Tunze Comline DOC 9004 skimmer fit in? What is the distance between walls and how high is water column? Tunze 9004 needs almost 10" of water to operate. Also, will Fluval U3 internal filter fit in?
Question by: Elena Yacoub on Sep 14, 2020, 8:56 PM
Unfortunately, It will not fit in the Fuge.
Answer by: Matt Lucero (BRS Staff) on Nov 5, 2021, 8:53 AM
I have a 20 gallon with two clowns and watchman goby, with this be large enough for my setup to reduce nutrients?
Question by: James D. on Oct 7, 2017, 10:03 PM
Hey there,
Thanks for getting in touch with us in regards to this HOB refugium. This would work perfect on your tank, making a 20%+ volume refugium. I would personally try to get a variety of macro algae in order to make sure you are hitting multiple angles of nutrient reduction. The most important being Chaeto algae. Please let me know if there is anything else that we can assist with. Thanks!
Answer by: Tyler Schafer on Oct 14, 2017, 2:15 PM
I bought the large refugium. Is this good for a 60 and 75 gallon and is mineral mud good by itself or can I have a layer of mineral mud with sand substrate on top?
Question by: Jeremy Blanding on Jan 25, 2017, 3:12 AM
Hey there, great question! This fuge will definitely work for you! You don't necessarily need any substrate like mud or sand. It will work just as efficiently with simple macro algae. Adding a substrate just lessens the available area for water volume and space to grow algae. :-)
Answer by: Randy on Jan 28, 2017, 10:17 AM
Is the light with this unit capable of growing!
Question by: Jimmy on Dec 28, 2016, 1:59 PM
Hey there! This light can effectively grow macro algae. We actually are testing this and other lights as we speak, so watch for an upcoming video in the next couple of months! :-)
Answer by: Randy on Jan 4, 2017, 4:08 PM
Does the LED have a timer?
Question by: Rafael Noriega on Dec 2, 2016, 8:59 AM
Great question! It does not have a built in timer. You will need to plug it into a timer for control. :-)
Answer by: Randy on Dec 2, 2016, 9:25 AM
How many watts is the pump ? And is good for 55 gal ?
Question by: Edmond on Aug 5, 2016, 9:31 PM
The Large Aquafuge 2 uses a Rio 600 pump rated at 9.5 watts. It would be a great fit for a 55 gallon to add beneficial organisms.
Answer by: Jason Smith on Aug 9, 2016, 3:53 PM
I have a 180 gallon reef tank with hang on protein skimmers, a canister filter with a in line uv light and a phosphate reactor. I would rather not hook up a sump just for a refugium. So do you think this refugium will be big enough?
Question by: Ben on Jun 14, 2016, 1:35 PM
Great question!
Realistically even the Large will not have a big impact and while it certainly can help to grow algae and may be fun it will not serve a large role in nutrient removal for its size. Feel free to let us know if you have any further questions.
Answer by: Connor on Jun 15, 2016, 11:09 AM