Comline DOC Skimmer 9001

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Using the Tunze Flash Skimming Principle, the Comline DOC Skimmer pulls water through an efficient surface suction.

  • 5.3 to 37 US Gallon tank (Depending on tank load)
  • Skimmer Cup volume: .2 Liters
  • Air capacity: 26 GPH
  • Magnet holder for up to 3/8" thick glass
  • Quiet Operation
  • Bubble free outgoing water
  • Easy to remove collection cup
  • Immersion depth: approx. 135mm to 155mm (5.3 to 6.1in.)
  • Power consumption: 2.5W, 230V/50Hz (115V/60Hz)
  • Dimensions: L110 x W63 x H215mm (L4.3 x W2.5 x H8.5 in.)


The Tunze Comline DOC 9001 skimmer utilizes Tunze's "Flash Skimming" principle. The skimmer is quiet and generates a very large volume of small bubbles for efficient skimmer operation. It operates stand-alone without needing any additional equipment (feed pumps, etc) and mounts to the tank via a convenient magnet holder strong enough for glass up to 3/8" thick.


The TUNZE® Foamer generates large volumes of fine air bubbles with a diameter between .0039 to .011 in. (0.1 to 0.3 mm). On the surface of the air bubbles, pollutants such as protein, cellulose, dead cells, etc. are adsorbed immediately. The water/air mixture expands and stabilizes in the skimmer cup reactor, the water returns to the aquarium, and the protein-loaded air bubbles spill over into the skimmer cup. The patented anti-overfoaming system intermediate chamber prevents the skimmer from over foaming and controls the skimmer performance, depending on the water level and organic load. This “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.


pdf Owners Manual

More Information
UPC 4025167900112
Skimmer Type In-Sump / Internal, Nano
Capacity Light Bioload - Up to 37 Gallons
Medium Bioload - Up to 21 Gallons
Heavy Bioload - Up to 5.3 Gallons
Dimensions 4.3"L x 2.5"W x 8.5"H
Rec. Water Level 5.1" - 6.1"
Max Tank Thickness 3/8 in.
Air Draw 100 LPH
Pump Model Comline Foamer 9001.040
Pump Rotor Type Impeller
Variable Speed No
Power Type AC
Power Consumption 2.5 Watts
Power Cord Length 6 Feet
Pump Included Yes
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Product Questions

Just wondering, this would work fine if I were to mount it in a sump as supposed to in the tank?
Question by: Jake on Jun 13, 2023, 2:18 PM
Hey there,
Thank you for reaching out to us. Yes, it would work just fine.

Please let me know if you need anything further and take care!
Answer by: Matt Lucero (BRS Staff) on Jun 16, 2023, 9:19 AM
If the collection cup were to overflow, would it overflow back into the tank or would there be a possibility that it would spill onto the floor?
Question by: Courtney on May 31, 2017, 7:03 PM
The skimmer is designed to be run in-tank/in-sump, and as a result any overflow should be directed back into the tank.

Have a great day!
Answer by: Zack on Jun 7, 2017, 4:32 PM
Will it fit in the 2 chamber of a jbj nano cube 24? Looking for a protein skinner that will and do a good job. I'm not a fan of the air driven ones
Question by: Johnny on Jun 29, 2016, 10:08 AM
We are not familiar with the JBJ back compartment. The full size is L4.3 x W2.5 x H8.5 in which you will need to have in the chamber.
Answer by: Connor on Jul 1, 2016, 12:44 PM
Does this skimmer fit in an IM Nuvo fusion 20?
Question by: Jason on Mar 12, 2016, 1:42 AM
Great question!
Unfortunately the Tunze Comline will not fit in the Nuvo 20. The only alternative is the Desktop Ghost skimmer by Innovative Marine. Feel free to let us know if you have any further questions!
Answer by: Connor on Mar 14, 2016, 10:47 AM