Emerald Sump 39 - Trigger Systems

Trigger Sump 39
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  • Trigger Sump 39

Emerald Sump 39 - Trigger Systems

100% Recommend this to a friend (11 of 11)

SKU: 209231
In Stock: 21
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Quick Overview

Why does BRS recommend this?

Trigger systems have 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.

Emerald 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


Full Details

The Emerald series introduces several new features not found anywhere else. Some of the features of the Emerald 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
  • Emerald green coloring to block light and prevent unwanted algae growth in other sections


EMERALD Water Flow

Water enters the EMERALD 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 Emerald 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 Emerald 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 Emerald 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.



11 Items

  • Trigger 39 By Msg on 5/2/2017

    Great sump I bought an oversized sump for extra volume. Every thing works great I wish it came with 4 probe holders my apex has 4 probes but other than that this is a wonderful sump
  • EXCELLENT!! By William on 2/13/2017

    I have been using this sump in my 125 for several months and it is my first aquarium with a sump. I will never go back to HOB skimmers and power filters, this is just too easy. But that is another story.

    I did a lot of research ahead of time and picked the Emerald due to several features that make it the best choice for me.

    The 3 filter socks are lined up on the left side of the sump, making access a snap. Takes just seconds to swap them out on the fly. Easy on my poor back.

    Lots of room for the skimmer and heaters in the skimmer section.

    I am using 25 gallons of the 40 gallon capacity at 9 inches with about 15 gallons of unused space. Only a few gallons drain back through the return lines when power is turned off, so there is plenty of safety margin. Even if my ATO somehow emptied its entire 10 gallons at once into the system, and then the return pump failed at the same time, this sump would not overflow.

    Fuge section is HUGE. The water level adjustment works perfectly, and the return section is plenty big for the VarioS-6 return pump. Even at the max setting, the dual Durso drains are fairly quiet, with just a nice pleasant flow sound audible when the TV is not on. I normally run the VarioS-6 at the 3 setting, which is even quieter.

    Overall a great product. I am 100% satisfied with my purchase.

  • One of the Best Sumps you can buy By Jason on 2/8/2017

    This Trigger Sump 39 is one of the best built sumps I've seen. solidly built and you can feel it uses quality materials. I like the 2 or 3 return option it comes with, I have two returns on my tank but use the third return as a return from equipment I have coming off my manifold, so no extra hosing hanging into the sump.
  • Very Pleased By Bryan on 2/1/2017

    I am using this sump currently on an 80 Gallon Deep Blue, and it is a little overkill for my tank. The design is very impressive as far as quality and functionality. I have plenty of room for ever piece of equipment that I can imagine I will need for my tank. The only thing i had an issue with is the drain sizes being 1" on this large of a tank I thought being that it was made for larger systems they might have a larger drain inlet at least 1.25-1.5". I contacted them and they do offer the larger size at a reasonable price so I really have nothing to complain about for this sump.
  • Good Sump "Some issues with mine though" By Chad on 10/14/2016

    I waited for about a month to give this review. I don't like giving reviews until I have had time to use a product.
    Build quality is good I have one section where the welding process has lots of bubbles in the seam. This doesn't seem to be a problem at this time hopefully it won't be. Was kind of surprised they didn't reject the sump because of this The plate where the return lines go into "Section 1" has salt creep around it running down the back of the sump that I have to keep clean. I wish Trigger Systems would make a gasket to keep this from happening.
    Im using the filter sock plate so the water is more evenly distributed among the three socks.If you don't use the plate the first sock takes all the abuse.
    Having the adjustable water height is really nice for tuning in the skimmer.
    Overall I would say it is a nice sump and worth the money. If I had noticed the issues with the seam and the air bubbles before I had set it up I would have returned it for another one. and for this reason I only give it 4 stars.

  • Solid Construction By Kenny on 8/3/2016

    I have yet to install the sump but after receiving it the quality and design is superb. Looking forward to fitting it below my 220g setup.
  • Functional design and looks great!! By Kevin on 4/6/2016

    Upgraded to this acrylic system after my glass one cracked. Cuts down in noise and I love the adjustable water level option.
  • QUALITY By KEITH on 1/8/2016

    Exceeds expectations,layout and features are well designed
  • really nice By Matthew on 12/7/2015

    well made, looks great, only 4 stars because the overflow from filter sock area splashes out from where the returns come in to the sump. It seems to want to splash out and go in to skimmer section instead of more smoothly going through the filter sock area. (I plan to remedy this soon by placing a peice of acrylic over the first part of the opening. other wise the sum is great plenty of room for: skimmer, refugium, and Vectra pump.
  • Great Product. By Robert on 10/23/2015

    The construction and quality is awesome. I love the fact there is a lid for the filter sock area to prevent water splashing and cut down on the noise. I also like that the water level is adjustable. I’m just very impressed with the product design and quality. The shipping and packaging was great as it always is with anything you receive from BRS.
  • Outstanding Sump! By Zechirian on 8/24/2015

    Ordered and delivered within 3 days, got it setup the day after it got here and am nothing but impressed. HUGE skimmer section and great flow throughout. I came from a 40g breed DIY project and this thing is light-years ahead. Trigger systems comes in at a premium but you get what you pay for. I'm using the 2 overflow inputs instead of the herbie method and currently using the 3 filter socks. I'll be switching to drip inputs as soon as the three socks become full and then will use them immediately after any water changes. I've got an Innovative Marine fuge light on it and the green acrylic kills any light from going in to the skimmer/return section.

    Awesome stuff!


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Product Questions

What is the acrylic thickness of this sump?
Question by: Michael Barcomb on May 14, 2017 9:35:00 PM
Hey there,
Trigger uses 1/4" thick acrylic all around with Euro-bracing for support.

Have a great day!
Answer by: Zack (Admin) on May 17, 2017 3:23:00 PM
What size filter socks do these use? What is the difference between the Emerald and Tideline trigger sumps?
Question by: Kevin on Mar 15, 2016 6:06:00 PM
Great question!
The Emerald will use 4" filter sock rings. The tideline is a series from trigger which they sell direct to brick and mortar fish stores. The differences are in lay out of the sump and drain line as well as the Tideline using 7" filter socks instead. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Mar 16, 2016 10:44:00 AM
What is the consistency of the water flowing evenly through all the socks?
Seems to me more water will be going through the 1st sock rather than the 3rd.
Do certain socks get clogged more than others or is it even throughout?
Question by: Michael on Jan 12, 2016 8:36:00 PM
Great question!
Overall the flow will be consistent throughout. While 1 filter sock may clog the spread of the water over the others tends to be very smooth and will tend to evenly spread! Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Jan 13, 2016 1:46:00 PM
Would this sump work on a 180 or could I get the smaller emerald version
Question by: Jared on Jan 26, 2016 5:28:00 PM
Great question!
This sump can work well with a 180. It is not the size of the sump rather whether or not the sump can fit the protein skimmer and any other component you will need. The 39 has the most room for skimmer and should work great! Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Feb 3, 2016 3:24:00 PM
How would I hook up an external skimmer to this sump? I'm looking to get a recirculating reef octopus 3000 or 5000. And plan on using the skimmer section as a large refugium and the refugium section for reactors or other media like marine pure blocks
Question by: Alexi on Nov 6, 2016 12:06:00 PM
Great question! External skimmers require a separate feed pump, or a manifold from your return pump. As long as you have the space under your stand or in your fishroom for an external skimmer, you would simply need a small feed pump inside the sump to feed it. :-)
Answer by: Randy (Admin) on Nov 8, 2016 4:33:00 PM
I just got this sump I am currently using one return line into the sump. its bubbling and not flowing smoothly into the filter sock chamber and is kinda loud what could be my problem
Question by: Jake Mcpherson on Mar 31, 2016 6:24:00 PM
Great question!
The reason there is loud noises when set up with a single drain line is the siphon is drawing in air. To resolve this noise there are a few options. Ideally having a second hole drilled in the tank and adding an emergency drain. The main line can then have a gate valve added to it. This is called the herbie method overflow. This method allows you to tune the original drain down to prevent the noise and have an emergency in case the flow gets clogged. Other overflow methods include Bean animal method which can be found online as well! Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Apr 5, 2016 4:10:00 PM
Would this size work for a 240 gallon tank? If not which would you recommend?
Question by: Erin on Feb 24, 2016 8:54:00 AM
Great question!
This certainly can work well and is one of the largest sumps. Overall the sump size can vary and does not have an effect rather making sure you buy a sump which can hold your reactors, skimmers and other elements. Checking the footprint of the return section and skimmer section will help to make sure your correct skimmer will fit. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Feb 24, 2016 2:53:00 PM
would this work for a 300 gallon freshwater tank? I don't really need room for a protein skimmer or reactor but have never really ran a sump before and the new tank I just bought is drilled for a sump. If not this one, could you recommend a sump? thanks
Question by: adam on May 12, 2016 2:40:00 PM
It certainly will work well, The most important factor is that you have space for the components in the sump to keep them out of the tank. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on May 17, 2016 4:48:00 PM
What is the maximum size tank you would recommend for this sump
Question by: Stephen Schrey on Jan 18, 2016 4:48:00 PM
Great question!
This can work on any sized system as long as your equipment can fit. We recommend first finding the correct sized skimmer for your tank and then making sure the foot print of the skimmer can fit in the sump, from there most other components of the sump are fairly small. We typically see this on 75 gallon - 200 gallons.
Answer by: Connor (Admin) on Jan 26, 2016 7:25:00 PM