| 摘要 |
The air propelled by a source (1) or blower by means of a water pump entersthrough the inlet (17) into a solution having a pH greater than 10,containing a special coloured pH indicator for continuous control; the air incontact with said solution is cleaned of its impurities and, under pressureor constant suction, exits at the outlet (16) to end up in the aquarium,wherein it has the object of oxygenating the water without exteriorpollutants of any kind.
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