Искуственая циркуляция воды в водоеме, насыщаем кислородом водоем.
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![[Angiopicture] Междисциплинарный зал](https://sun9-71.userapi.com/impg/Ma2vrnmP-IuYPSQIWM4drlpTDBPWQXalMoxyKg/MedRMx5ah0o.jpg?size=320x240&quality=95&keep_aspect_ratio=1&background=000000&sign=631b9ae6235c597a47f4940b6213d945&c_uniq_tag=tlFcolMaQAlGSHajZZoWVn5X1kYi6saItDP3adD8MM4&type=video_thumb)
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