Tunze Master DOC 9415 Protein Skimmer

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 9415, 9430 and 9460

The DOC Skimmers 9415, 9430 and 9460 combine very compact design with high performance and are ideal for installation in aquarium cabinets. They feature TUNZE® Hydrofoamers 9420.040, 9430.040 or 9460.040 which ensure proper foam production and water circulation at the same time.
Delivery form: Ready to mount; with accessories.

Aquariums up to 700 liters (185 USgal.):

Standard glass aquarium (L x W x H) 800 x 400 x 500 mm
(31 ½" x 15 ¾" x 19 ¾"), glass thickness 8 mm (1/3").
Water level: 150 mm (6 in.), safety volume approx. 110 liters (29 USgal.).

Aquariums up to 1.000 liters (264 USgal.):

Standard glass aquarium (L x W x H) 1.000 x 400 x 500 mm
(39 1/3" x 15 ¾" x 19 ¾"), glass thickness 8 mm (1/3").
Water level: 150 mm (6 in.), safety volume approx. 140 liters (37 USgal.).

Anti Overfoaming System in three steps:

After the improvement of the water parameters, the skimmer returns to the normal operating condition again.

Normal foam production:
The...

foam rises evenly into the foam reactor.

Overfoaming A:
Foam production...

increases due to the surface tension and pulls the bubbles out of the foam reactor.

Overfoaming B:
Foam production...

increases further, bubble production is stopped immediately, foam production is reduced.

Skimmer cup with large capacity;...

also contains the foam reactor; can be removed easily.

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.

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.

Hydrofoamer Silence places the air...

generator at the top of its product class.

The inner mixing cylinder stabilises...

the foam rise in the body and ensures bubble-free output water.

Stable base which also reduces...

the water velocity in the lower zone of the skimmer.