Fiji Cube

Fiji-12 Advanced Reef Sump - 2nd Gen

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$299.99 $299.99

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Fiji Cube sumps are characterized by truly unique design features and a clean, elegant design. When it comes to sumps, it they all operate on pretty similar designs and layouts, so choice can really come down to the fine details. Fiji Cube has incorporated some innovative and interesting features into their sumps that we think you'll really appreciate.


At the very start, you'll notice the interchangeable filter sock holder or filter floss tray, providing extra versatility in mechanical filtration. One feature we really like is the built-in heater holder bracket in each sump, which takes the hassle and concern of proper heater mounting in the sump out of the equation. Of course, they also include plenty of room for equipment such as skimmers, reactors, and return pumps, so all modern sump needs are met. You'll also find a polycarbonate sump cover with a skimmer cutout included to reduce noise and evaporation, which is another unique trait that shows their attention to detail. Rounded corners, euro-bracing, probe holders and dosing tube holders round out the mainstays for a really well rounded sump design.



  • High quality full cast acrylic construction and full top support brace
  • Quiet water flow operation design
  • Interchangeable floss filter box and filter sock holder
  • Removable heater holder, test probe holder and dosing holes included
  • Removable auto-top-off float valve holder
  • Water level adjustable (5”-12”) in protein skimmer, refugium and equipment compartments
  • Polycarbonate sump cover / lid



  • Recommended Tank Size: 10 gallons to 40 gallons
  • Overall Dimensions: 12.5"L x 14"W x 12"H
  • Skimmer Chamber: 12"L x 7.5"W
  • Refugium Section: N/A
  • Return Pump Section: 6"L x 7"W
  • Filter Sock Holders: 1x 4"
  • Drain Input Size: 2x 3/4" or 2x 1"


What's Included?

  • Fiji Cube Fiji-12 Advanced Reef Sump, 2nd Generation
  • Removable Heater Holder Bracket, Probe Holder Bracket, and Dosing Tube Bracket
  • Polycarbonate Sump Cover
More Information
UPC 761856630185
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Product Questions

Will this sump fit in the stand under my Red Sea Nano peninsula?
Question by: B on Jan 12, 2024, 2:05 PM
Hey there,
Thank you for reaching out to us. From the dimensions on the website that will work. Overall Sump Dimensions: 12.5"L x 14"W x 12"H Tank total System w/ Cabinet (excluding light) - 18"L x 23"W x 52"H. Please let me know if you need anything further.
Answer by: Thomas Wofle (BRS Staff) on Jan 31, 2024, 9:36 AM
Hello BRS, will this sump accommodate the Klir 4 inch model rollermat? Thanks!
Question by: Mitch Powers on Nov 20, 2022, 9:06 PM
Thanks for the question! This sump and the Klir Di-4 work very well together! Please let us know if we can help with anything else!
Answer by: Kyle Thomas (BRS Staff) on Nov 26, 2022, 11:07 AM
Thanks for the question! The eurobracing on this sump will likely cause you to modify it in order to get the klir to sit proper! These will work though! https://www.bulkreefsupply.com/catalogsearch/result?q=ice%20cap%20sump
Answer by: James Johnson (BRS Staff) on Nov 26, 2022, 11:10 AM
Hey guys i wanted to buy this sump for my nano tank. I have a hob protein skimmer aquamax 1.5, Im wondering if the space is good enough for it. I know i can hand it but i don't wanna have a chance to get water on the floor so for that reason i wanted to place it in to the sump. thank you
Dimensions are: 7.5 x 3.5 x 17 inches
Question by: Christian Gavilanes on Apr 15, 2020, 1:10 PM
Hi there,

Looks like it will be a snug fit but should fit, the Skimmer Chamber: 12"L x 7.5"W
Answer by: Thomas Billington on Apr 16, 2020, 2:33 PM