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5. Starting/Performance
The system can be started when the skimmer is correctly installed. After switching the pump on, air
is automatically drawn into the skimmer. To minimize the noise level, connect the air inlet tube with
the blue connecting piece of the sound absorber supplied. Fix the sound absorber with the holding
plate on the aquarium or filter system above the water level.
The needle wheel breaks the air into small bubbles. This method eliminates the greater proportion of
the noise. After the initial start, some hours may pass before the first foam is pushed into the
collection cup. This is due to a reaction between the surface of the acrylic glass and aquarium water.
Equilibrium of electrical charges takes place. After a maximum of 24 hours, the foam should be
pushed evenly into the collection cup. The quantity of liquid and organic substances is dependent on
the pollution of the aquarium.
6. Problems
Adjustment
The skimmer is adjusted using the flow control (Fig. 1, No. 5) as well as the electronic control DC
Runner Control 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. 1, No. 9) 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 air and less water 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 be 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 water level controller. Remove
neck extension.
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