| 摘要 |
A pump assembly for an aquarium includes a water circulation pump having a first casing and an aeration pump having a second casing, wherein the aeration pump is operated by the magnetic field of a rotating magnetic shaft that is rotatably mounted in the water circulation pump. The first casing and the second casing are connected to each other. A lever in the aeration pump is reciprocated continually to draw air into the pump and discharge air into the aquarium due to the magnetic field of the rotating magnetic shaft so that the coil is unnecessary in the aeration pump. Consequently, the pump assembly can be marketed for a lower price and save energy when used.
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