Aqua Medic EVO 1000 Manual De Instrucciones página 10

1. Venturi pump DC Runner 1.1
2. Filter sump
3. Overflow
4. Return-pipe to aquarium
Set-up beside or inside the filter tank (Fig. 5):
The EVO 1000 can also be installed in the cabinet filter. It can be placed either in or outside the filter tank.
The set-up outside the aquarium (at the side) is done as described above. It is attached to the edge of the filter
tank. If the filter tank is not high enough, the skimmer is placed beside the tank. If the water level in the filter
tank is very low or there is a shortage of space in the tank, the outflow elbow fitting (Fig. 1, No. 8) may be
connected to the outlet and then water will be directed to the water surface in the tank. This avoids splashing
and reduces noises. The venturi pump is fixed inside the filter tank in such a way that it will not run dry and the
length of the pressure tube shall be kept as short as possible. The pump should be placed close to the water
surface. To prevent the pump running dry, we recommend to use an automatic level controller (e. g. Refill
System pro, aquaniveau or Niveaumat) to ensure replacement of evaporated water and to keep the water level
in the filter constant.
5. Starting/Performance
The system can be started when the skimmer is correctly installed. After switching on the pump, air is
automatically drawn into the skimmer. To minimize the noise level, connect the air inlet tube with the blue
connecting piece of the silencer supplied. Fix the silencer with the holding device on the aquarium or the filter
system.
The needle wheel breaks the air into small bubbles. This method eliminates the greater proportion of noise.
After the initial start, it might take a few days until the foam production is ideal. This is due to a reaction
between the surface of acrylic glass and aquarium water. Equilibrium of electrical charges takes place. The
quantity of liquid and organic substances is dependent on the pollution of the aquarium. Using the DC Runner
Controller, the foam production can be optimized. It is normal that you need to adjust a few times in the first
period.
6. Problems
Adjustment
The skimmer is adjusted using the flow control (Fig. 1, 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.
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).
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.
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