Tunze Comline DOC Skimmer 9004

Tunze Comline DOC Skimmer 9004
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Tunze Comline DOC Skimmer 9004

100% Recommend this to a friend (2 of 2)

SKU: 208412
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Quick Overview

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

  • Up to 65 Gallon tank (Depending on tank load)

  • Skimmer Cup volume: .2 Liters

  • Air capacity: 40 GPH

  • Magnet holder for up to 3/8" thick glass

  • Quiet Operation

  • Bubble free outgoing water

  • Easy to remove collection cup

  • Immersion depth: approx. 225mm to 245mm (8.86 to 9.65 in.)

  • Power consumption: 4W, 230V/50Hz (115V/60Hz)

  • Dimensions: L110 x W90 x H305mm (L4.3 x W3.5 x H12 in.)

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Full Details

The Tunze Comline DOC skimmer utlizes 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 1/2" 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.


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  • Works, but could be built better By DrexelLake on 12/12/2014

    I have the same complaint as many reviewing this online, and that is that it very flimsy and hard to get back together. The bubbles do come out all over too, but that doesn't make it less effective. Works great until you need to clean it. It took me 20 minutes to get the snaps to hold when putting it back together.
  • Great skimmer for small tanks By Clint on 4/11/2014

    I have been using this skimmer in a 20 L for about a year and have been very happy with it. It does not appear to be very sensitive to changes in water level, produces good skimmate, is easy to clean, stays in place with the magnets. If you are willing to sacrifice a little space (the skimmer sits inside of the tank) I think this is a great choice for tanks less than 30 gallons.

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