Bubbling device (1) for fermentation tank (10), in particular alcoholic fermentation, chemical fermentation, maceration, conservation, silage, purification of minerals, purification of wastewater, infusion, brewing during the manufacture of beer, aquariums, etc., and more particularly for the vinification of wines or spirits, making use of the device according to the present invention. This device comprises a diffuser (2) and a supply pipe (3), where the diffuser (2) is tubular, shaped to be disposed horizontally at the bottom of the tank (10), able to contain a gas and pierced with at at least one hole suitable for letting the gas out, and where the supply pipe (3) is fluidly connected to the diffuser (2) and suitable for supplying the diffuser (2) with pressurized gas. It also relates to a method involving the implementation of this device.

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