DOC Skimmer 9410

How do you select the right DOC skimmer for a marine aquarium?

Due to its biotope composition, every marine aquarium has a different sensitivity with respect to the organic load. Based on a standard marine aquarium with leather corals, the data on the suitable aquarium size may differ for other biotope compositions. For this reason, the aquarium volumes recommended for the skimmer should be reduced for more sensitive biotopes, if and when necessary.

Low sensitivity, no reductions

In leather coral aquariums with long-polyp corals and anemones, for example, the load of dissolved organic matter may be higher, sometimes it may even be vital.

The DOC Skimmer can be used for the recommended aquarium volume without reductions.



Average sensitivity, 40% reduction

Amedium organic sensitivity is usually found in mixed aquariums inhabited with leather and stoney corals (LPS). Filters, sponges, etc. can also be found there. A DOC skimmer that is designed for 1,000 liters (264 USgal.) is likely to only skim 40% of organic substances with this light pollution.

Thus, a DOC skimmer for 1,000 liters (264 USgal.) should be used for a tank with a maximum content of approx. 600 liters (158 USgal.).



Increased sensitivity, 60% reduction

Aquariums with primarily small-polyp stoney corals (SPS) require an especially high degree of purity. They should have no load of phosphates or nitrates worth mentioning. Good oxygen saturation and very clear water are the pre-requisites. In this type of aquarium, the DOC skimmer is frequently used as a "stand-alone solution".

Thus, a DOC skimmer for 1,000 liters (264 USgal.) should be used for a tank with a maximum content of approx. 400 liters (106 USgal.).



High sensitivity and high load,

70% reduction

Hard coral aquariums (SPS) with a high population of fish require an extremely high skimming capacity. The skimmer has to ensure the proper degree of purity for hard corals in case of an excessive fish burdening, whereas an especially high performance is required if it's used as a "stand-alone solution".

Thus, a DOC skimmer for 1,000 liters (264 USgal.) should be used for a tank with a maximum content of approx. 300 liters (79 USgal.).



Especially for Comline® DOC skimmers used as contact skimmers for breeding tanks with plankton, 70% reduction

Stone coral aquariums or other breeding tanks with plankton food require an especially high degree of purity. Good oxygen saturation and very clear water are the pre-requisites.

Thus, a Comline® DOC skimmer for 1,200 liters (317 USgal.) should be used for a tank with a maximum content of approx. 360 liters (95 USgal.)

TUNZE® DOC Skimmer 9410

Skimming, filtering and aerating a saltwater aquarium without power consumption is impossible. But, no unit uses less current than TUNZE® DOC Skimmer 9410. At a power consumption of only 11 W (15 W), the DOC Skimmer has equivalent performance to much larger skimmers consuming more than twice as much power. In addition, no settings are required, it is extremely silent and it is easy to operate.

Aquariums up to 500 liters (132 USgal.):

Standard glass aquarium (L x W x H) 500 x 300 x 400 mm

(19 ¾" x 11 ¾" x 15 ¾"), glass thickness 6 mm (1/4"). Water level: 150 mm (6 in.), safety volume approx. 37 liters (9.75 USgal.).

Energy Saving

Skimmer cup (ø160 mm (6.2 in.)) with large capacity; also contains the foam reactor; can be removed easily.

The booster ring permits a fine adjustment of the performance, thus adapting the water level inside the skimmer as required for the production of somewhat wetter foam, for example.

The removable post-filter at the outlet of the skimmer permits perfect mechanical filtration through 300 µm (11.8 mil) nylon mesh with little biological action only. This ensures that no unwanted nutrient and nitrate sources develop in case of longer cleaning intervals. The filter can be filled with other filter media, such as activated carbon or phosphate absorber.

Stable base which also reduces the water velocity in the lower zone of the skimmer.

TUNZE® Hydrofoamer Silence 9410.040 is a pump specifically developed for protein skimmers. The Hydrofoamer generates large volumes of fine air bubbles with a diameter of between .1 to .3 mm (.004" - .012"). It has an energy consumption of only 11 W (15 W) at an air output of 600 l/h (158 USgal./h) which places this air generator at the top of its product class. At a water flow of 900 l/h (237 USgal./h), it is also used to supply the aquarium water to the skimmer.

The mixing chamber with flow distributor binds an especially high amount of organic material.

Intermediate chamber with phase water: The patented Anti-Overfoaming System prevents an overfoaming of the skimmer and regulates the skimming action according to surface tension of the aquarium water and water level. The skimmer operates independently and automatically sets its best efficiency.

Nipple for ozone connection. Ozone improves the skimming process and at the same time removes any yellowing matter in the aquarium water.