The invention relates to a device for forming concretions in an electrolytic medium by electrolysis, comprising an anode 110 and a cathode 120 immersed in the electrolytic medium and a regulation circuit 100 configured to regulate an electrolytic current to form concretions on the electrolytic medium. cathode 120. The anode 110 and the cathode 120 are used as electrolysis supply current source and are connected in the regulation circuit by at least one regulation element able to limit the electrolysis current. Figure to be published: Figure 1
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