Tunze 9004 skimmer

Comline DOC Skimmer 9004 - TUNZE

Recommended based on tank load for marine aquariums from 60 to 250 liters.

- Immersion depth: approx. 225 to 245 mm

- Skimmer capacity: 0.2 liters
- Air capacity: approx. 150 l / h
- Energy consumption: 4 W, 230V / 50Hz (115V / 60Hz)
- Dimensions (L x W x H): 110 x 90 x 305 mm
- Mounting with a magnetic support for glass up to 12 mm thick.

Technical Features

How to choose the right DOC skimmer for a saltwater aquarium?

Each marine aquarium, due to a uniquely created biotope, has a different sensitivity to the load of organic compounds. The assumptions regarding tank size are for the average marine soft coral aquarium, so these recommendations may vary depending on the biotope composition. Therefore, for sensitive biotopes, when choosing a skimmer, the recommended volume should be reduced or corrected if necessary.

Low sensitivity, no correction

In aquariums containing soft corals, such as long polyps and anemones, the amount of dissolved organic compounds can be higher and sometimes even essential to life. 
The DOC skimmer for this aquarium volume can be used without needing a patch. 

Medium sensitivity, 40% reduction

 
In mixed tanks containing soft and hard corals (LPS), a medium sensitivity to changing organic conditions is generally observed. Zooplankton, sponges, etc., are often found here as well. For these aquariums, a correction of about 40% of the indicated skimmer capacity is calculated. 
A DOC skimmer up to 1000 liters should be used for a tank maximum of about 600 liters. 

High sensitivity, 60% reduction

Aquariums predominantly containing SPS stones require a particularly high degree of water purity. They should not be loaded with phosphate or nitrate. High oxygen saturation and clear water are indispensable. The DOC Skimmer is often used in these aquariums as a "stand-alone" solution. 
A DOC skimmer up to 1000 liters should be used for a tank of about 400 liters. 

High sensitivity and high load, 70% reduction

Aquariums containing hard corals and many fish require a very high skimmer capacity. A skimmer should provide a high degree of water purity for stone corals with a relatively large number of fish. When used as a "stand-alone" skimmer, it must be particularly efficient.
A DOC skimmer up to 1000 liters should be used for a tank of about 300 liters. 

In plankton breeding tanks, 70% reduction

Hard coral or plankton breeding tanks for feeding require a particularly high degree of water purity. High oxygen saturation and clean water are indispensable. 
A DOC skimmer up to 1200 liters should be used in a tank of about 360 liters.

The TUNZE® Comline®

Compact aquarium components for ultra-functional, sophisticated internal operation, with clearly defined lines.
The Comline® is a range of multifunctional products: Surface and substrate zone intake, high-flow propeller pump filter, flash protein skimming, the system creates a natural environment in the aquarium with a compact footprint. The goal is more performance with less space. The Comline® components meet these requirements and maintain the visual harmony of the aquarium. There is no longer a need to hide technical equipment in the aquarium; instead, it becomes an integral part of it. The system is very efficient; all organic pollutants are removed directly from the environment, while the path the water must travel is short and direct. The risk of leakage is almost nil. Highly efficient technology allows for a reduction in the volume of internal equipment, as well as a significant reduction in energy consumption.

Comline® DOC Skimmer 9004

The Comline® DOC Skimmer 9004 is designed for saltwater aquariums up to 250 liters. It operates on the principle of TUNZE® instant skimming and draws water from the surface layer when dirt is removed. As a result, it is used in aquariums as a standalone solution. TUNZE® Foamer generates a large number of small air bubbles with a diameter of 0.1 to 0.3 mm and is extremely quiet.

Flash Skimming

The Flash Skimming principle ensures efficient foam production and high machine performance.
Principle: The protein-rich surface water layer is very intensively mixed with air by TUNZE® Foamer. During the formation of air bubbles, waste such as proteins, cellulose, dead cells, etc., are collected on the surface, producing small bubbles with a diameter of 0.1 and 0.3 mm. The mixture of water and air bubbles is relaxed and stabilized in the skimmer, then the water returns to the aquarium and the air bubbles with the proteins move to the foam tank reactor. The patented Anti Overfoaming system - an intermediate chamber with a water distributor prevents the skimmer from boiling and regulates the foam efficiency according to the water level and biological load.

With Flash Skimming, particularly high efficiency can be achieved compared to modular skimmers with long contact times, because in this case, the substances absorbed by the bubbles do not detach but return to the aquarium water.