CPR Aquatics

Small CITR3 Pro DX In-Tank Refugium

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The CITR3 Pro’s versatility and ease of use make it a valuable addition to any aquarium. You can use the CITR3 as a refugium to improve filtration by growing and harvesting macroalgae, as a designated space for cultivating small organisms like copepods and amphipods as food, or even as an acclimation or isolation box for new or injured fish and corals. The in-tank, high flow design allows tank inhabitants to regenerate damaged tissue without the need for a separate quarantine tank. Adjustable hanging bracket and pump included. The bracket on the CITR 3 PRO will fit rimless and rimmed tanks up to 1.25” thick and will fit tanks with euro bracing up to 0.50” thick.



  • Updated grate design for improved flow
  • Adjustable hanging bracket included
  • Pump included
  • Clear acrylic sides and black backing
  • Use as an in-tank refugium, acclimation or isolation box



Dimensions - 7.25”L x 4”W x 7.125”H

Hanging Bracket - Fits rimmed and rimless tanks up to 1.25" thick; eurobraced tanks up to 0.50" thick


What's Included?

  • 1x Small CITR3 Pro DX In-Tank Refugium
  • 1x Pump 
  • 1x Hanging Bracket
More Information
UPC 646392033464
Manuals Instruction Manual
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Product Questions

What are the dimensions of the pump? Do the total dimensions provided account for the pump as well or just the acrylic box?
Question by: Adam on Sep 20, 2022, 10:15 PM
Hey there,
Thank you for reaching out to us. The dimensions are for just the box of the refugium and the pump is 2.2 x 1.8 x 1.4 inches.

Please let me know if you need anything further and take care!
Answer by: Matt Lucero (BRS Staff) on Sep 22, 2022, 8:20 AM