| 摘要 |
Pressure is guided by a pump into the main chamber (4) of the filter unit (3), causing the water to flow towards the open top (17,18) of the filter element (13). The water passes through the filter material (12), consisting of cotton wool or carbon, enters the main area (4) again and is transported through a pipe (27,28) back into the fish tank (1). The filter element is screwed to the main chamber with an outer thread (14,15) positioned at the outlet (6) at the bottom.
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