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& - This extremely porous micro hose has been specially developed for aquaculture. It is available in different sizes, e.g. B. with ID 10 mm, OD 16 mm, length 2 meters, corresponding to: rubber tubing with inner diameter 10 mm, outer diameter 16 mm, length 2 meters. & - Japanese growers attach the hose to the bottom of koi ponds to effectively prevent dangerous oxygen deficiency in summer and winter. It also ensures optimal water movement in helix chambers and moving bed systems. – The hose is made of high-quality materials and does not sink to the pond bottom by itself – a fixation with a steel housing is required. Thanks to its round shape, it is ideal for ventilation of filter chambers as well as for use in floating and fluidized bed reactors. & - It offers low flow resistance, excellent diffusion properties, is robust, easy to clean and does not clog or wear - this guarantees a consistently high flow rate. - For larger ponds, it is recommended to break the tubing every 5 meters, install a T-piece, and couple with the air pump via a connection hose – this ensures an even air supply to all sections!