Trigger Systems

Sapphire Sump 39

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Why does BRS recommend this?

Trigger systems has been making sumps for quite some time now and they have won us over with their attention to detail, practical designs and overall aesthetic appeal. With the ability to modify the sump to your needs with adjustable water levels, interchangeable plates , tube holders, probe holders, and enough room to put equipment where ever you need it.

Sapphire 39

  • Dimensions: 39″ long x 16″ wide x 15″ high
  • Skimmer Section: 14″ x 15.5″
  • Center/Refugium Section: 10.5″ x 15.5″
  • Return Pump Section: 6″ x 15.5″
  • Total Water Volume: 40 gallons
  • Skimmer Water Level: 7″ to 9.5″ adjustable
  • Drain Input Fittings: two 1″ and three 1″
  • Filter Socks: 3


The Sapphire series introduces several new features not found anywhere else. Some of the features of the Sapphire sumps are:

  • Interchangeable plates (PAT PENDING)
  • Lid to prevent splashing
  • Adjustable water height
  • Self-adjusting foam block platform (PAT PENDING)
  • Dual platforms
  • Protein skimmer section
  • Refugium section
  • Sapphire blue coloring to block light and prevent unwanted algae growth in other sections


Sapphire Water Flow

Water enters the Sapphire sumps into a dedicated section where the water will then flow over into Section 1.


Section 1 where the interchangeable plate is located allowing for either filter sock or foam block mechanical filtration. This area is covered with a lid to prevent water splashing. Water then flows out the bottom of Section 1 into Section 2.

Section 2 is typically where the protein skimmer is located. Water then flows through the ‘Trigger Symbol’ cutout into Section 3.

Section 3 is the refugium section. The water then flows over the second baffle through 2 perforated platforms and under the third baffle into Section 3. The top perforated platform comes with a foam block filter and the bottom one is open to use for several different filtration methods (bag of carbon, bio balls, rubble rock, etc.).

Section 4 is the return water section back into the tank. This is where the return pump will sit.


Interchangeable Plates (PAT PENDING)

Each Sapphire sump comes with two plates that can be placed into Section 1:

  • Filter Sock Plate
  • Foam Block Plate


The filter sock plate is installed when the included 100 micron filter socks are desired.

The foam block plate is perforated with holes and comes with a foam sponge block filter. The foam block plate can be used when filter socks are not desired or in the case when the filter socks need to be changed or cleaned but replacements socks are not readily available but yet mechanical filtration is needed. In this case, simply remove the filter sock plate and install the perforated foam block plate and then place the included foam sponge block filter in place.


Adjustable Water Level

Water level in the sump is adjustable from 7” to 9.5” to accommodate for the water height requirements for different protein skimmers.


Self-Adjusting Foam Block (PAT PENDING)

As the water level is adjusted by sliding the wall up and down, the foam block sponge filter and the perforated plate that it sits on will also move up and down automatically. This is important to maintain the correct location of the foam block sponge filter with respect to the sump water height.


Probe Holder

All Sapphire sumps come with a probe holder that can hold up to three probes. The two outside holes are 0.63” in diameter and the center hole is 0.8” in diameter to fit different sized probes.


Hose Holder

All Sapphire sumps also come with 4 holes in the top support brace for holding in place 1/4” OD tubing from reactors, dosing pumps, ATO, etc.

More Information
UPC 744271816563
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Product Questions

what length is the filter sock? Which ones are recommended?
Question by: Eric Pearson on Nov 11, 2022, 12:44 PM
Thanks for the question! These socks are either 6 or 8 inches long, they do change based on availability. If you are looking to purchase more we'd recommend the BRS Felt Filter Sock with Plastic Ring 4” x 8”. Let us know if we can help with anything else!
Answer by: Kyle Thomas (BRS Staff) on Nov 17, 2022, 2:06 PM
Would you be able to drill the end of the tank to use a external pump?
Question by: Mike on Jan 24, 2018, 10:36 PM
You can drill the sump for an external pump. Drilling it will more than likely void the warranty but make sure to use a good quality drill bit, and take it slow to minimize the chance of anything going wrong.
Answer by: Charlie on Jan 25, 2018, 4:45 PM
Hi, I want to order this sump and the Super Reef Octopus SRO-3000INT 8” In Sump Protein Skimmer for a new tank build. My question is that this sump indicates the skimmer water level is adjustable between 7 and 9.5" and the Octopus ideal water level is 6-6.5 inch. Is it possible to use these together or raise the skimmer by an inch?
Question by: Chris on Nov 4, 2017, 7:39 PM
Yes, you can use a riser to lift the skimmer if you need to. They do make acrylic skimmer risers, or some people will just DIY their own. The nice thing about the hobby grade risers is that they have multiple adjustments allowing you to tune the skimmer into its sweet spot.
Answer by: Charlie on Nov 26, 2017, 8:37 AM
Would this be sufficient for a 210 gallon (72x24x30) reef tank. Or is there better choices in this price range
Question by: JOSHUA HALE on Jun 9, 2017, 11:11 PM
While there isn't an exact size requirement for sumps, it's usually recommended to shoot for about 20% of display volume. The largest consideration should really be that the sump have enough volume to hold the runoff water from the display which will drain down when the return pump is turned off, and also to ensure the size of the sump is large enough for the desired equipment.

Have a great day!
Answer by: Zack on Jun 14, 2017, 12:04 AM
How big of tank would you recommend this sump for?
Question by: Colten on May 30, 2017, 8:20 PM
I'm afraid there isn't really a specific formula for tank to sump size, though 20% of display volume is what I would consider a minimum ratio. Really the most important considerations will be to ensure you have enough reserve volume in the sump to hold water from the display in the event pumps are shut off and water flows down to the sump, and then also to make sure you have room for any desired equipment.

Happy reefing!
Answer by: Zack on Jun 7, 2017, 3:26 PM
It says "drain input fittings: 2-1" and 3-1". Is it possible to get the 39 size with just the 2 inputs? Or is this something that is added and removed by the user? I just have 2 drain lines.

Also, does this version come with the water dispersion plate that spreads the water evenly over the socks so the first one doesn't take all the abuse?
Question by: Jesse on May 15, 2017, 1:45 PM
Hey there,
The drain inputs are actually interchangeable and both plate options are included. The filter sock chamber does have the socks in series and there is no dispersion plate above.

Have a great day!
Answer by: Zack on May 17, 2017, 4:02 PM
How exact is the Skimmer chamber? I have the reef octopus classic 200int with a foot print of 15.6 X 10.25...wondering if i could shoe horn that in there? :)
Question by: Rich Reinke on Jan 4, 2017, 7:02 PM
Great question! The skimmer chamber measurements are pretty exact. It also doesn't take into account the lip around the top edge of the sump. I wouldn't say that your skimmer will fit correctly. :-(
Answer by: Randy on Jan 11, 2017, 12:37 PM
Will the Vertex alpha 170 fit in the skimmer chamber ?
Question by: Tony Bily on Dec 6, 2016, 11:21 PM
Great question! The skimmer section in this sump is 14? x 15.5? and that skimmer's footprint is 9.5" x 15" so that should fit just fine! :-)

Answer by: Randy on Dec 8, 2016, 1:06 PM