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Home » Saltwater Aquarium Supplies  » Protein Skimmers  » In-Sump Skimmers  » Venturi Needle Wheel  »  Tunze Comline DOC Protein Skimmer 9004
Tunze Comline DOC Protein Skimmer 9004

Tunze Comline DOC Protein Skimmer 9004

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Tunze Comline DOC Protein Skimmer 9004 Information

The new Tunze Comline® filters opens the way for compact aquarium components designed for internal operation, are ultra-functional and are highly-sophisticated. The system creates a natural atmosphere in the aquarium at a minimum size. The goal always remains the same, more performance and less space.

The Comline® DOC Skimmer 9004 is designed for use in seawater mixed aquariums / soft coral aquariums up to 250 litres (66 USgal.) or sensitive reef biotopes with stone corals up to 150 litres (40 USgal.). It works based on the TUNZE® Flash Skimming principle, water supply is provided via an efficient surface intake system with bacteria film removal. Thus, the system can also be used as a “standalone solution” in the aquarium. The featured TUNZE® Foamer generates many fine air bubbles with a diameter between 0.1 and 0.3mm, which ensures particularly silent operation.

The “Flash skimming” principle enables highly efficient foam production.
Principle: Protein-rich surface water is mixed with water thoroughly in the TUNZE® Foamer. On the surface of the air bubbles forming, pollutants such as protein, cellulose, dead cells, etc. are adsorbed immediately, the air bubbles are very fine, with a diameter between 0.1 and 0.3mm. The water/air mixture is expanded and stabilized in the skimmer cup, the water returns to the aquarium, and the protein-loaded air bubbles reach the skimmer cup reactor. The patented anti-overfoaming system intermediate chamber with phase water prevents the skimmer from overfoaming and controls the skimmer performance, depending on the water level and organic load.
The particularly high efficiency of the “flash skimming” principle compared to large skimmers with long contact time is obtained because the substances adsorbed by the air bubbles are not released again, thus they don`t return to the aquarium water again.

Includes magnet mounts for aquariums up to 3/8" thick.

  • Dimensions: 4.3" x 3.5" x 12"
  • Water Lever Required: Approx. 8.86" - 9.65"
  • Air Output: Approx. 150 L/H
  • Energy Consumption: 4W
  • Tank Size: 15-65 gallons
  • Surface intake with bacteria film removal.
  • Skimmer cup, 0.2l (.05 USgal.) volume, also accommodates the foam reactor, easy to remove.
  • Attachment with a patented magnet holder for a glass thickness of up to 3/8".
  • Intermediate chamber with patented anti-overfoaming system.
  • TUNZE® Foamer 9004.040, high air output and low energy consumption (4W).
  • Bubble-free outgoing water.
  • New “Comline® Design”: comfortable use, elegant and unobtrusive in the aquarium.
  • Air flow regulation and silencer for an exceptionally quiet operation.
  • Made in Germany, 2-year manufacturer`s warranty

Manufacturer Info

For forty-five years the name TUNZE® has been synonymous with aquariums. Many products and components which we have developed in the course of time are now standard features of aquarium technology today. This confidence in TUNZE is no coincidence. The company has remained true to its philosophy right from the beginning, researching water biotopes all over the world to develop components which enable natural water conditions in the closed environment of an aquarium. In the implementation of know-how, effectiveness and efficiency, TUNZE® takes the lead in environmental compatibility. Their motto is: quality and reliability. These values are upheld with well thought-out and precise tool making by highly qualified experts. The brand names of TUNZE® and Turbelle® meet the expectations of the seal of quality; Made in Germany. Many of the products shown in this catalogue are protected by national and international patents.

Tunze Comline DOC Protein Skimmer 9004 Reviews

Average Rating
(11 reviews)
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of 2

What a buy!

Reviewers Rating Excellent!

Posted: 4/14/2016 from BRIGHTON, CO UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: This thing kicks butt! It was easy to follow the instructions for setup. The magnets that secure it in place are heavy enough to do the job but are not unmanageable. The rubber spacers between the magnets and the skimmer keep the skimmer from vibrating on the glass. This thing is as close to silent as you can get! I love that it mounts to the inside of the aquarium, but it doesnt take up much are for how much it skims. I have it in a display tank and it isnt big enough to be an eyesore. I have had it running 24 hours and the chamber is over half full of dark nastiness. It started producing skimmate within a few minutes of setup. Quiet, relatively small, and affordable on the reef equipment scale of purchases. I highly recommend this skimmer!

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outstanding performance

Reviewers Rating Excellent!

Posted: 11/3/2015 from HUNTINGTON BEACH, CA .
5.0 5
Experience Level: Expert

Comments: This is my 2nd tunze skimmer the first I purchased back in 2000. But the 9012 model works great in my 180 gallon reef tank, easy setup, slim design and within 2 hrs of running was already producing foam. Tunze skimmers are the best IMO.

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Reviewers Rating Average

Posted: 10/30/2015 from SLINGERLANDS, NY UNITED STATES
3.0 5
Experience Level: Intermediate

Comments: Unit comes fully assembled except for the magnet extenders. Well the poor instructions didn't give you a good way disconnect the magnets other that just stick a screwdriver in. I finally got the magnets off but damaged the clips. So I had to glue the magnet extenders on to get it to work. My instruction manual also mentioned parts that were not included with this more recent model such as the little rubber bumpers that were to be installed on the magnet assembly and I was left with a small Velcro strip that isn't mentioned anywhere in the assembly instructions!

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Very impressive

Reviewers Rating Excellent!

Posted: 7/22/2015 from STATEN ISLAND, NY UNITED STATE
5.0 5
Experience Level: Intermediate

Comments: Well built. I soaked and ran the skimmer in vinegar and RO water for 15 minutes. Place it in my 40 breeder and it was producing skinmate within 5 minutes. I am very impressed and satisfied with it. I highly recommend it!

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Reviewers Rating Excellent!

Posted: 6/15/2015 from WALDEN, NY UNITED STATES
5.0 5
Experience Level: Expert

Comments: set up in less than 12 min started skimming within a few hours after 5 days a nice dry foam with a nice tea color . yes had micro bubbles for a few hours but stopped over night. highly recommend for a small reef system

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Reviewers Rating Great

Posted: 6/14/2015 from Cloquet, MN UNITED STATES
4.0 5
Experience Level: Intermediate

Comments: Hard to gage performance so far in my NUVO 30L tank as I have a lot of sand particles in the water which the skimmer was not removing until I put some cloudy water treatment and now it is pulling more. But this skimmer does not fit in my tank compartment so had to glue the magnet on the side of the skimmer and put it in the pump side of the NUVO where it crowds the pump return lines. I am awaiting a ghost skimmer made for the compartment where it will sit next to the filter caddy and perhaps do a better job. It also tends to tilt and move where it is now.

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Excellent Skimmer

Reviewers Rating Excellent!

Posted: 6/12/2015 from NH UNITED STATES
4.5 5
Experience Level: Intermediate

Comments: I was quite impressed with this skimmer. It started pulling gunk out of my 30 gallon tank in literally an hour or so and has continued to do so since then. The collection cup is a bit small and gets filled rather quickly, but I am very satisfied. Oh, and it is super quiet as well. You won't even hear it running. Two fins up!

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Great skimmer

Reviewers Rating Excellent!

Posted: 6/12/2015 from NY
5.0 5
Experience Level: Beginner

Comments: I've been using this for many months now in the back compartment of an all in one JBJ rimless 45 gallon (not the cube). The Marine Depot "does it fit" video shows it going in the main overflow compartment but I was able to squeeze it into the next compartment over (barely!)by turning it 90 degrees and haven't noticed any difference in functionality. By moving it over one compartment you can still have both overflow filters going. I also use this in conjunction with an auto top off, which is really a must for this skimmer. As this is a surface skimmer, I can usually tell when my auto top off reservoir is empty because the water level will drop enough to where the skimmer makes a sucking noise, but other than that it is very quiet. Produces some thick green goop. I have a cheaper skimmer on a 10 gal nano and the difference is night and day. Highly recommend this skimmer.

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Tunze Doc 2012

Reviewers Rating Excellent!

Posted: 3/3/2015 from SAINT JOHN, IN UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: I have this skimmer running in my sump in chamber 1 with miracle mud in chamber 2 and my nitrates are running at 1 which is just perfect. Coral are doing great skimmer is doing a great job of pulling gunk out and you dont have spend all your time trying to dial it in it just works!

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Above the rest

Reviewers Rating Excellent!

Posted: 2/17/2015 from PARKER, CO UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: This replaced my desktop Ghost skimmer. Already blows it out of the water after 4 days of starting. Quick break-in period, no microbubbles, quieter, looks much more sleeker. Just overall much better product and it works perfect on my IM 30L. There's a reason this website uses Tunze skimmers on the SR_80 build instead of the IM skimmers...

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