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1. Working principle
The water flows from the aquarium through a pre-filter sponge by gravity into the filter housing.
From here, it is pumped on the Biorotor sponge. This sponge is partly submerged (1/3) and starts
to rotate by the power of the flowing water. The result is an optimum oxygen supply for all bacteria
that settle on the sponge wheel and a very high biological capacity, comparable to wet dry filter
systems.
At the same time a part of the water is pumped back into the aquarium. The water inlet is
automatically evacuated, the water level in the filter is controlled by a mechanical float switch.
2. Parts of the Biostar
The Biostar contains the following parts:
1. Filter housing
2. Lid
3. Holding clamps (2 pcs)
4. Biorotor (sponge) with shaft
5. Level switch
6. Water in- and outlet
7 . Filter basket with sponge
8. Pump
9. 45°- elbow for connection
of the pump
10. Air hose
11. Sponge for pre-filter
12. Suction nozzle
13. Hose connection
14. 45°-outlet elbow
15. Adjustion screw
16. Power cord
Fig.: 1: Biostar
