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  2. Koi pond - Wikipedia

    en.wikipedia.org/wiki/Koi_pond

    When the total back pressure in the system is considered, a pump should be circulating the total volume of water at least once per hour for proper water quality. 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 ...

  3. Pumping station - Wikipedia

    en.wikipedia.org/wiki/Pumping_station

    Submersible pumps are mounted on two vertical guide rails and seal onto a permanently fixed "duckfoot", which forms both a mount and also a vertical bend for the discharge pipe. For maintenance or replacement, submersible pumps are raised by a chain off of the duckfoot and up the two guide rails to the maintenance (normally ground) level.

  4. Garden pond - Wikipedia

    en.wikipedia.org/wiki/Garden_pond

    Naturally, ponds vary more in their physical and chemical conditions from day to day than other freshwater, like rivers. People often install pumps in garden ponds to counter these natural tendencies, particularly to maintain higher levels of dissolved oxygen. Although this is generally unnecessary for wildlife, it may be essential to keep fish ...

  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. Water aeration - Wikipedia

    en.wikipedia.org/wiki/Water_aeration

    The impeller pumps water from the first few feet of the water and expels it into the air. [4] This process utilizes air-water contact to transfer oxygen. As the water is propelled into the air, it breaks into small droplets. Collectively, these small droplets have a large surface area through which oxygen can be transferred. Upon return, these ...

  7. Submersible pump - Wikipedia

    en.wikipedia.org/wiki/Submersible_pump

    A 0.75 HP bore-well submersible pump which had been used to pump groundwater One style of submersible pump for industrial use. Outlet pipe and electrical cable not connected. A submersible pump (or electric submersible pump (ESP) is a device which has a hermetically sealed motor close-coupled to the pump body. The whole assembly is submerged in ...

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