| 摘要 |
A filter adapted for use in a fish culturing tank, the filter including a filter casing, a pump mounted on top of the casing, and an attachment interposed between the casing and the pump which has an inlet portion extending in the casing through the attachment to suck the filtered water therein and an outlet portion for returning the filtered water to the tank, the attachment having a first means for allowing the inlet portion of the pump to pass through, and a second means for connection to the casing.
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