undergo a long contact time within the counter-current. Enriched with organic substances, they rise to the top
and form a firm foam that is dehydrated and pushed into the collection cup. This method removes organic
wastes from the aquarium water before they become part of the biological waste treatment cycle.
The venturi pump DC Runner 1.1 draws water out of the aquarium or filter chamber, mixes it with air in the
pump housing which is then cut into small air bubbles by the Aqua Medic 3D needle wheel. This water/air
mixture is then pumped into the reaction pipe where organic substances are taken up by air bubbles. Foam is
formed and pushed into the foam cup. The purified water leaves the skimmer via outlet and is directed back to
the aquarium or filter sump by the discharge (Fig. 1, No. 8).
4. Set-up
The EVO 1000 is a skimmer that can be directly mounted on the aquarium edge "Hang on", (Fig. 4).
Fig. 4: EVO 1000 in "Hang on" operation
Set-up:
Assemble the necessary parts of the skimmer (see Fig. 1). Now, it can be attached to the aquarium. Look for a
protected place within easy reach - at the side or the back. The venturi pump is connected with the pressure
fitting (Fig. 1, No. 10). The length of the flexible hose should be as short as possible. A fixing of the
pump at the glass pane is not necessary. The pump must be placed directly below the surface because the air
intake will decrease and the water flow will increase if it is mounted deeper. This would lead to humid foam and
fine air bubbles.
A 8-mm air tube is connected to the air injector (Fig. 2, No. 10) and fixed above the water level so the pump
can draw in air. Use the full length of the air hose which is attached to the sound absorber (Fig. 1, No. 13). This
will be connected to the holding plate and fixed at the outside above the water level.
Now, the skimmer can be aligned with the aquarium. The two spacer bolts at the bottom of the skimmer are
adjusted in such a way that the skimmer is hanging safely on the aquarium. It is advantageous if the skimmer
is not 100% upright but leaning slightly (2°) to the aquarium (Fig. 4). The skimmer is not only hanging more
safely then but also back-flow of water from the outflow box over the aquarium frame is prevented. Both spacer
bolts at the bottom are supplied with silicone suckers for increased safety. The skimmer is now ready for use
and can be started.
Fig. 5: EVO 1000 set-up next to the filter tank
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