UP39 Sumpro Sump - Skimz

UP39 Sumpro Sump - Skimz
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  • UP39 Sumpro Sump - Skimz
  • UP39 Sumpro Sump - Skimz
  • UP39 Sumpro Sump - Skimz
  • UP39 Sumpro Sump - Skimz
  • UP39 Sumpro Sump - Skimz
  • UP39 Sumpro Sump - Skimz

UP39 Sumpro Sump - Skimz

100% Recommend this to a friend (4 of 4)

SKU: 209778
In Stock: 20
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Quick Overview

Sumps are a great addition to any fresh or saltwater tank. From adding additional water volume to area for heaters, reactors, probes, and any other life support equipment you may want to add. Many tanks are already drilled or can be drilled for a sump to be added.

Skimz Sumps are by far one of the best sumps for the money and packed with features all reefers will value.

  • Dimensions: 39” L x 15” W x 15” H

  • Skimmer Chamber: 14” x 14”

  • Refugium Chamber: 8" x 14"

  • Return Chamber: 8” x 14”

  • Approximate Water Volume: 35 gallons

  • Top Off Volume: 3.0 gallons

  • Skimmer Chamber Water Level: Adjustable from 7” – 9” with Level-O-Matic

We suggest choosing the largest sump that you can fit in the space allowed.


Full Details

The features of the Skimz Sumpro series have been designed with the advanced reefer in mind, many of which you will normally only find on expensive, high end sumps. All Skimz sumps include integrated probe holders, filter socks, tube holders and an adjustable skimmer chamber. With a super clear front acrylic window allowing you see your equipment without any distortion and all other sides are white to keep things bright and super sharp looking.


DuoFlo Sock Chamber

With the importance of crystal clear water every Skimz sump comes with a DuoFlo tiered filter sock system. The system incorporates two filter socks of different lengths in a series allowing for fewer changes of both filter socks, and the ability to install a progressive micron system of filter socks.



Allows quick and steady adjustments of the water height in the skimmer chamber by controlling an adjustable baffle. There are no thumb screws to mess around with like many of the competitors and your hands will stay dry when adjusting the baffle allowing your choice of skimmer to perform at its prime level.


Probe Holders

Each Skimz Sumpro Sump comes with 4 integrated probe holders that will accompany any type of probe up to ½” diameter.


Dosing Tubes

Dosing tubes can always be a source of clutter and headache to keep looking clean and not a tangled mess. Every Skimz Sumpro sump comes with 4 dosing tubes letting you dose anything you want from trace element solutions, calcium reactor effluent, nitrate reactors, or anything else that uses standard 3/16” tubing.


Top-Off Chamber

Select Skimz models even include and integrated top-off chamber to house freshwater, just add an ATO unit and your set. The compartment that is dedicated for fresh top off water even includes a perfectly fitting lid that includes notches allowing the ATO's power cord and tubing to sneak through without modification.


Refugium Chamber

The Refugium Chamber on select models of the Sumpro’s will allow you to grow beneficial macroalgae to help combat nutrient build up as well as house zooplanktons like copepods and amphipods. The Refugium section does have white acrylic baffles keeping the light in the refugium and from spilling out onto other equipment.


What’s In the Box:
1x Sumpro UP39
1x Sock Cover
1x Level-O-Matic Control Knob and Nut
1x Spillway Gate
1x Spillway Sponge
1x Chiller Hose Cover
1x Heater Cover plate
1x El-M300 Filter Sock
1x EL-S300 Filter Sock
4x Silicone Dosing Tube
4x Dosing Tube Hose Barbs and Nuts
2x Switchable PVC Pipe Cover
8x Switchable Cover Thumbscrews
4x Probe Holder Thumbscrews

Skimz Sump Comparison Chart

Model Approx water volume Skimmer Chamber Skimmer Chamber Water Height Refugium Chamber Return Chamber Built in Top-off reservoir Overall Dimensions
UP18 19 Gal 12" x 13" Adjustable 7" - 9" N/A 5" x 17" N/A 18" L x 18" W x 15" H
UP22 16 Gal 11.5" x 11" Adjustable 7" - 9" N/A 5" x 11.5" N/A 22" L x 12" W x 15" H
UP30 27 Gal 14" x 14" Adjustable 7" - 9" N/A 8" x 14" 2.0 Gal 30" L x 15" W x 15" H
UP34 30 Gal 13" x 14" Adjustable 7" - 9" 5" x 14" 8" x 14" 2.4 Gal 34" L x 15" W x 15" H
UP36 32 Gal 13" x 14" Adjustable 7" - 9" 6" x 14" 8" x 14" 2.7 Gal 36" L x 15" W x 15" H
UP39 35 Gal 14" x 14" Adjustable 7" - 9" 8" x 14" 8" x 14" 3.0 Gal 39" L x 15" W x 15" H


4 Items

  • Pleased By Tony on 8/4/2017

    I've had the UP39 sump for about 2 months now. It has worked great. I'm not using the ATO reservoir because it is just too small for my 125 gal display. The probe holders work awesome with my Apex probes. The dosing ports are working wonderful with my 2 part setup. If I was able to change one thing it would be to swap the refuge and skimmer sections. My skimmer is too big for the first section and I would prefer to have the refuge second. Other than that it is a great design and quality product.
  • Packed well By Patrick on 4/21/2017

    I have not setup the sump yet but I read a lot of reviews about the packaging of the sump and damage when shipping. I can report that they have packed this thing like a tank. The cardboard around it is reinforced cardboard. The top piece was very thick. If you are thinking against this sump because of shipping think again as it is done very well. I will update on the sump once installed.
  • Excellent sump By Santhosh on 11/30/2016

    Impressed by this Skimz sump design and quality. Looks like a show piece under my tank. Best of all, it priced right.
  • Great look and features but could be better. By Zach on 8/23/2016

    I bought this to go along with a 120 gallon that I was starting up. First of the quality is there, everything looked great out of the box. Probe holders, Dosing line holders, a ATO container and a gate to control the water level were the reasons I bought this. It seemed like it was everything I could want in a sump, but that is where the good ends. There are no bubble traps at all. At the entrance to the sump I understand why since it has filter socks and exit to the second chamber underwater. The third chamber needs it though. I have been trying to control those using filter media in the holder. Also speaking of the media holder, I wish it went the whole was across the sump. It is about 8 inches and detritus like to collect in the rear of the chamber. I had to add a Hydor PH to prevent this from happening. Also a clip on Fuge light can not be added since the rim is way too thick.

    Like I said it could be a better sump and if I ever need another sump in the future I will pass on skimz unless they change their design. A Trigger Ruby will be the next one.


Ask a question

Product Questions

what type of material would you use in the Refugium
Question by: Deborah Lopez on May 21, 2016 9:31:00 AM
Great question! Here are some links to products we'd recommend:



Most hobbyists will also have some type of macro algae as well (caulerpa, Chaetomorpha, Etc.)
Answer by: Carter (Admin) on May 24, 2016 12:35:00 PM
Being as how the water enters into the refugium chamber through the bottom, it doesn't appear that a substrate is a viable option. It's hard to tell from the pictures but, is there a reason why the skimmer chamber couldn't be used as the refugium and vice versa?
Question by: Kurt Niedrich on May 24, 2016 11:03:00 PM
Great question!
No reason they cannot be used in reverse order. many people like the skimmer first and refugium second to help capture any micro bubbles.
Answer by: Connor (Admin) on May 25, 2016 4:25:00 PM
How thick acrylic do they use for their sumps and is the top a single continuous piece of acrylic?
Question by: Thomas Dinka on May 14, 2017 6:23:00 AM
Hey there,
The walls are 3/8" thick, all other baffles and braces are 1/4" thick. Feel free to let us know if you have any further questions!

Happy reefing!
Answer by: Zack (Admin) on May 16, 2017 4:53:00 PM
Does this sump use standard 4" filter socks?
Question by: Ken on May 18, 2016 6:49:00 PM
Correct this will use regular 4" filter sock s with plastic rings.
Answer by: Connor (Admin) on May 18, 2016 6:50:00 PM
When my return pump shuts off my display tank drains about 19 gallons into my sump. Will this sump hold that much water when the power goes out and my DT drains?
Question by: Boyd A. on May 31, 2016 7:25:00 PM
Great question!
this will depend on where the baffles are set however the sump could hold typically 15-18 gallons extra flow. We recommend a check valve to keep excess water from flowing down the return lines.
Answer by: Connor (Admin) on Jun 2, 2016 2:47:00 PM