© by WilTec Wildanger Technik GmbH Seite 8
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http://www.aoyue.eu R十一2Ro十一ia2March 2020 Version 11
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The leak point is then the lowest point of the filter cover/lid and appears typically at the lateral
clamping points that connect the cover lid with the filter tank.
To fix the problem, rinse and check the O-rings. Make sure that the spots where the O-rings
are inserted and positioned are free of dirt. On these particular spots algae formation can
appear and impair or damage the O-rings, if no regular cleaning is carried out. This problem
can also appear because of other pollutants, such as sand, for instance.
Please allow sufficient time for rinsing and cleaning; if this is not done carefully and thorough-
ly the aquarium filter may still leak after the O-ring seals have been cleaned.
If, despite a thorough cleaning, the water leakage at the above-mentioned spots still persists,
you must check the O-ring gaskets inside the adaptor. This requires opening the inlet/ outlet
adapter. Please contact our customer service if any help is required.
Basic Filter Media
The delivered filter media only provides the basic filter material needed for your aquarium.
Please inform yourself which filter materials are suitable for your aquarium as these can dif-
fer depending on the fish and plants in the aquarium.
For each stage of the filter please use one filter wadding. This should be regularly renewed
because dirty fleece/ wadding can quickly lead to a decrease in filter efficiency.
Aquarium external filters consist of several layers. Water is sucked in and filtered in several
stages. The lowest layer (stage) consists of bio balls. These balls offer beneficial bacteria a
large settling area and retain coarse dirt. Above it a layer of ceramic rings should follow. On
the top level, we recommend a filter sponge covered by a filter wadding.
Additionally you can place another layer of activated carbon (in a netting bag or also availa-
ble as a filter mat), which will also form one layer of the filter. This should not be permanently
employed, but it should be used after a medication treatment and for turbid water with sus-
pended particles (not included). When you purchase a new aquarium filter or after it has
been fully cleaned the beneficial bacteria must be enriched again. For this reason there are
special bacteria cultures that can be supplied to the aquarium to facilitate their settlement.
Stages from bottom to top:
• 1
st
stage: mechanical/ partial biological filtering
• 2
nd
stage: biological filtering
• 3
rd
stage: chemical filtering (activated carbon, etc.)
If necessary the aquarium filter can be extended to 4 stages by adding a mechanical or bio-
logical filter stage.
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