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Trigger Systems Sump - Emerald 39 Inch


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Item #: 6E81646

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Built in Dallas Texas, Trigger Systems sumps combine strength, functionality and beauty all in one sump system.

Unlike budget sumps, Trigger Systems takes the extra steps of rounding the corners and using an extra-strong center brace. All sumps are subjected to pressure and stress fatigue. Poorly-made sumps eventually show signs of pending failure such as bowing and micro cracks in the acrylic.

Trigger Systems sumps are hand-fabricated using thick acrylic and strict quality controls to ensure their sumps outperform all others. Enjoy all the refinements of a custom sump without the high costs!

The 40-gallon Emerald Sump has 4 separate compartments:

  1. Interchangeable plate section for micron filter socks, a foam block and incoming water inlets
  2. Skimmer section with adjustable water height
  3. Center/Refugium Section with adjustable baffles for foam, rubble and phosphate removers, etc
  4. Return Pump Section for a submersible water pump

The sump plate section comes with the option for two or three water input fittings. You can customize the plate section to use filter socks and/or a foam block for mechanical filtration.

What we really like about the Trigger Systems Emerald Sump:

  • Super-strong construction
  • Cool emerald green color
  • Lid on the plate section quiets water noise
  • Adjustable water height to accommodate protein skimmers and media
  • 4” 100-micron filter sock for super-clear water
  • Hand-made in USA
  • Built in probe holder holds 3 probes
  • Built in hose holder has 4 holes for tubing from reactors, dosing pumps, and ATOs

Trigger Systems Emerald Sump Features:

  • Lots of space for a skimmer, media and water pump
  • Pre-drilled for 1/4" ATO and dosing hoses
  • Water height adjustable from 7” to 9.5” for different protein skimmers.
  • Foam block platform automatically adjusts to water height
  • Patent-pending interchangeable 100-micron filter sock and foam block plates
  • Can use filter socks and/or foam block filtration to polish the water

Trigger Systems Emerald Sump Specifications:

  • Sump Dimensions: 39” long x 16” wide x 15” high
  • Maximum Water Volume: 40 gallons
  • Customizable Drain Inlets: 2 or 3 (two inlet plates are included: one with 2 fittings, one with 3 fittings)
  • Mechanical Filtration: 3 x 4” 100-micron sock and/or a foam block
  • Protein Skimmer Section: 14" x 15.5"
  • Adjustable Skimmer Water Level: 7”- 9.5”
  • Center/Refugium Section: 10.5" x 15.5"
  • Return Pump Section: 6" x 15.5"

Trigger Systems Emerald Sump Product Line Comparison:

Model Dimensions Skimmer
Water Level
Emerald 26 26x13x15 8.25x10 7.75x12.5 5x12.5 20.4G 7"-9.5"
Emerald 34 34x15x15 10x14 10.25x14.5 6x14.5 31G 7"-9.5"
Emerald 39 39x16x15 14x15.5 10.5x15.5 6x15.5 40G 7"-9.5"
Emerald 20C 20x20x15 11.625x9 19.5x6 13.25x7.625 24.3G 7"-9.5"

5 Stars


Reviewed on
January 23, 2018

Yes, I would recommend this.


This sump is well built, beautiful and has a lot of room for all your equipment

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Reviewed on
October 14, 2017

Yes, I would recommend this.

A sump for the serious hobbyist.

This sump absolutely met all of the expectations I had! It is very well designed to meet the needs of a reef aquarium. This is truly a top of the line sump built to hold accessories like a skimmer, ATO and auto doser.

Was this review helpful? 4 0

lawrence blankenship

Reviewed on
September 10, 2016

Yes, I would recommend this.

Trigger Systems 39" Sump

Trigger Systems Sump, Color is just dress up. The sump is great, it is built very well, you can't help loving it. I like the way the water is directed through the Sump, I have Red Pipe down for water from tank and used Blue pipe for my clean water going back up to tank after it is filtered by this amazing Sump set up. OK, I know you want to know that it is built with care by Trigger Systems, it is the best I have seen. you will like it. A little Price for Quality. 4 1/2 because I would like to see it a 42" Refuge could be 3" wider.

Was this review helpful? 8 0

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