| 摘要 |
A device for aerating a body of liquid comprising an upper portion and a lower portion, the upper portion being a conduit formed of a flexible plastic material with a plurality of apertures formed therein, the apertures being sized to substantially prevent passage of liquid therethrough while permitting passage of low pressure gas, the lower portion comprising a ballast which is welded to the upper conduit. The device may be utilized for aerating water gardens, ponds, sewage basins, and the like.
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