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Fig. 5: Venturi pump AQ 750 with mesh wheel
1. Motor housing
2. O-rings
3. Rubber bearing with washer
4. Ceramic shaft
5. Rotor with mesh wheel
6. Air inlet fitting
7. Cap for pump housing
8. Filter basket
9. 4 rubber feet
10. 4 plugs for rubber feet
4.3. Theory
Protein skimming is a method of physical water treatment. It uses a phenomenon known from our daily
experience: the adhesion of surface active substances to air water layers. If we add a drop of oil to a
water surface, a thin film is produced with a thickness of only one molecule. Surface active compounds
like proteins behave in the same way. The Turboflotor Blue 500 uses its air bubbles to create a large
water surface for the waste substances to attach themselves to. These air bubbles are forced into the
reactor-pipe in a such a way that they 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 AQ 750 draws the water out of the aquarium or the filter chamber, mixes it with air in
the pump housing which is then cut into small air bubbles by the AB Aqua Medic mesh wheel (5). This
water/air mixture is then pumped into the reaction pipe where the 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 drain gutter (5a).
4.4. Set-up in the filter chamber:
The Turboflotor Blue 500 is mounted on the partition pane of the filter chamber. The outlet (5a) of the
skimmer is extended downwards in order to grant a safe halt.
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