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  2. Koi pond - Wikipedia

    en.wikipedia.org/wiki/Koi_pond

    An air pump can be used to increase dissolved oxygen. In a heavily stocked koi pond, an air pump is a necessity. Along with the water pumps, there must be jets placed in areas where there is little to no water flow. Jets may keep stagnant water from forming and possibly assist in preventing mosquito larva from breeding.

  3. Water aeration - Wikipedia

    en.wikipedia.org/wiki/Water_aeration

    Water aeration. Fountains aerate water by spraying it into the air. Water aeration is the process of increasing or maintaining the oxygen saturation of water in both natural and artificial environments. Aeration techniques are commonly used in pond, lake, and reservoir management to address low oxygen levels or algal blooms.

  4. Airlift pump - Wikipedia

    en.wikipedia.org/wiki/Airlift_pump

    G: Gravel or solids. An airlift pump is a pump that has low suction and moderate discharge of liquid and entrained solids. The pump injects compressed air at the bottom of the discharge pipe which is immersed in the liquid. The compressed air mixes with the liquid causing the air-water mixture to be less dense than the rest of the liquid around ...

  5. These Koi Pond Ideas Inspire Instant Relaxation - AOL

    www.aol.com/koi-pond-ideas-inspire-instant...

    These 15 koi pond ideas will inspire you to transform your outdoor space into a serene outdoor oasis. They prove that koi ponds can work in spaces of all sizes.

  6. Paddle wheel - Wikipedia

    en.wikipedia.org/wiki/Paddle_wheel

    Physics. The paddle wheel is a device for converting between rotary motion of a shaft and linear motion of a fluid. In the linear-to-rotary direction, it is placed in a fluid stream to convert the linear motion of the fluid into rotation of the wheel. Such a rotation can be used as a source of power, or as an indication of the speed of flow.

  7. Archimedes' screw - Wikipedia

    en.wikipedia.org/wiki/Archimedes'_screw

    The screw pump is the oldest positive displacement pump. [1] The first records of a water screw, or screw pump, date back to Hellenistic Egypt before the 3rd century BC. [1] [3] The Egyptian screw, used to lift water from the Nile, was composed of tubes wound round a cylinder; as the entire unit rotates, water is lifted within the spiral tube to the higher elevation.

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