Filter Operation and Problem Solving
Noise Reduction/ External Air
Especially the suction intake/ inlet and the connected suction surface must be checked for
tightness and adjusted according to the water level of the aquarium. In case this is not possi-
ble due to aquarium technical reasons, seal the whole suction surface so that no external air
can get into the filter.
Deaerating
Take the return-flow hose that conducts the water from the filter to the tank and place it in a
clean bucket that is placed below the filter. Lead the hose into the bucket and carry out the
deaeration process by activating the manual pump. Please make sure that the possible max-
imal flow is adjusted to the inlet/ outlet connector. As soon as no air bubbles can be seen,
seal the hose with a finger and install it again as intended on the return pipe at the top edge
of the aquarium.
Leakage after Installation or Cleaning
In case of a slight leakage after the installation or the cleaning of the filter most likely the seal
between the hose connector and the filter head (cover) is out of place. The plug-in adaptor,
to which the hoses are connected, has two O-rings on the lower side. These must seal the
connection inside the filter lid. If the O-rings are dirty, displaced or damaged they cannot seal
properly anymore and water escapes through the filter lid/cover of the aquarium filter.
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