Can anyone identify what the blue and orange floating item with paddles is in this picture of what appears to be a Chinese fish or turtle farm?
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It is an aerator for the pond. They use them for oxygenating the water and for circulation. Link to the Pentair model in picture
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$\begingroup$ And in a round pond they can be placed to make the pond rotate sending all debris to the center ( bottom). $\endgroup$ – blacksmith37 Jul 2 '20 at 15:49