HOB-R Hang-On-Back Refugium

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The AquaMaxx HOB-R Hang-On-Back Refugium is the quick and easy way to create a small ecosystem for your aquarium. 

A refugium helps control nitrates and phosphates in a natural way by providing space for macroalgae to grow.  Macroalgae will compete with nuisance algae within the aquarium, and assist your filtration system in cleaning up the water column. 

The HOB-R will also harbor many beneficial invertebrates which consume uneaten food or detritus. Invertebrates such as copepods and amphipods can be found living in the sand and liverock in many aquariums, however, these invertebrates can often diminish in numbers as they are preyed upon by inhabitants.  Adding a refugium will shelter these tasty fish snacks, ensuring that there is a colony consistently providing to the food chain and helping in the break down of organics, in safety. 


HOB-R Features

  • A Sicce Syncra Nano pump powers the system, and is contained within a baffle
  • Baffle housing allows use of a sand bed in the refugium
  • Large viewing pain on the back panel for monitoring algae growth
  • Slotted pre-outlet helps keep macro-algae from escaping into the display
  • Outlet sponge helps keep microbubbles from entering the aquarium
  • Easy to secure and remove inlet for quick maintenance


Main Body Dimensions: 16.75"L x 3.25"W x 12.75"H
Back to Front of Inlet Distance: 5.5"
Back to Front of Outlet Distance: 6.5"
Fits tank rims: up to .75"
Pump(included) Sicce Nano pump
Power Consumption: 2.8 watts 
Please note: A refugium light is not provided.  Refugium lighting is needed to grow macroalgae, and is recommended to run on an opposite schedule as the main display`s.
More Information
SKU 250065
UPC 651137770535
Manuals Aquamaxx HOB-R Hang-on Refugium Owners Manual
Color Black
Included Mounting Hang On/Bracket
Power Consumption 2.8 Watts
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Product Questions

Is there enough room for a skimmer to be added?
Specifically thinking about the
Style Submersible
Item Dimensions LxWxH 4.25 x 5.5 x 20.75 inches
Question by: Mike Richardson on Mar 20, 2023, 9:13 AM
Since the Aquamaxx HOB-R dimensions are 16.75"L x 3.25"W x 12.75"H, there should be sufficient space for a small skimmer if you want to add one.
Answer by: Scott F. (BRS Staff) on May 10, 2023, 4:21 PM
What is a recommended light for this?
Question by: Eddie Fleetwood on Sep 23, 2022, 9:25 PM
Hey there,
Thank you for reaching out to us. The Chaetomax would be a great light.


Please let me know if you need anything further and take care!
Answer by: Matt Lucero (BRS Staff) on Sep 27, 2022, 10:35 AM
Will this fit a 75 gallon rimmed tank Thanks Bob
Question by: Robert Vacchiano on Jun 19, 2022, 7:53 AM
This will fit tank rims up to .75" thick.
Answer by: Ash Hoglund (BRS Staff) on Jun 23, 2022, 9:30 AM
What size tank would this be able to handle? Min-max size.
Question by: Sean Oxford on Nov 14, 2021, 11:17 PM
Hello, this is a very good question, there is no Min or Max size because you can always add a refugium to any aquarium as long as there is nutrients and proper light to grow the macroalgaes. If you are interesting in using macro algae as the only form of nutrients export, I would recommend looking at our BRStv Investigates 3 Part Series called "Testing Refugium" or contact us via email at support@bulkreefsupply.com
Answer by: Christian (BRS Staff) on Nov 15, 2021, 7:16 PM