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6.
Problems
Adjustment
The skimmer is adjusted using the flow control (Fig. 6, No. 4) as well as the electronic control DC Runner
Controller so it works to the optimum. The water level in the skimmer is adapted to foam production. If the foam
is too wet even when the flow control tap is fully open, the neck extension (Fig. 6, No. 6) can be mounted to
adjust the foam production.
Air bubbles
Reduce the length of the hose between pump and skimmer. The pump should be placed close to the surface,
otherwise, more water and less air will be sucked in because of the increasing water pressure. Result: Many air
bubbles are leaving the skimmer, wet foam will fill the foam cup in a very short time.
If the skimmer is added to an existing aquarium, there may be a high concentration of organic substances
already dissolved in the water. This results in very tiny bubbles in the skimmer. These tiny bubbles remove the
organic substances effectively, however, it may happen that some of these bubbles are drawn back into the
aquarium. After a few days, the concentration of organic substances will have decreased to such low levels that
this effect will have gone and the water flow is free of air bubbles.
Some types of frozen food may have the same effects, especially, it the food is not thawn and washed prior to
feeding it to the fish. The air bubbles will stop after a short period by themselves. Greases will stop the skimming
completely.
Wet foam
With freshly prepared salt water, after using water conditioners or at extremely high loading, excessive wet
foam may be produced. This wet foam is forced into the cup, requiring more frequent emptying than normal.
After approx. one day, the aquarium load will be normal and the skimmer will produce correct foam. If it is not
getting any better, first of all lower the water level in the skimmer by opening the control flow. Furthermore,
reduce the length of the hose (see air bubbles), use neck extension.
In new set-up aquaria, there is usually no reasonable skimming. The skimmer produces large
quantities of wet foam. This is normal and can be adjusted with the controller until the foam cup is
no longer full
Dry foam
Not enough or too dry foam could be an indication that the needle wheel or air injection nozzle is dirty. A
thorough cleaning is recommended. Remove the pressure fitting from the pump. If it's not a problem of cleaning,
increase water level inside the skimmer by the flow control. Remove neck extension.
7.
Maintenance
The collection cup should be cleaned regularly (daily or weekly, depending on organic load). The reaction pipe
of the skimmer needs to be cleaned only occasionally. The venturi pump should also be removed and cleaned
regularly so there is no negative impact on the air output. The pump has to be removed and the complete pump
housing and needle wheel flushed with clean water. The same procedure should be undertaken with the air
injection nozzle.
8.
Lighting (please refer to the attached manual)
Fig. 9: Holder for aquarius
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