| 摘要 |
A decorative A-frame type water transfer bridge is provided for selectively siphoning water from one or more aquarium fish tanks. A siphon pump evacuates the desired amount of air to cause the water to enter and fill the bridge. A bleeder valve with a visually perceptible air lock permits the user to control the exact amount of air to be evacuated without spillage of water or retention of unwanted air bubbles.
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