20 of the flow container are several electrodes 24 that enable the galvanic treatment electrodes which may be used in the present device are more particularly described in co pending patent application ser no 13 207 573 and which is incorporated herein in its entirety by reference the inner chamber 20 may be of any shape in some embodiments a cylindrical inner chamber 20 is found it is advantageous that the inner chamber has a size and shape to accommodate electrodes 24 without allowing a significant amount of water to bypass the electrodes the electrodes 24 include one or more anodes 26 and one or more cathodes 28 the anodes 26 are made from a first metal and the cathodes 28 are made from a second metal any metals can be used as long as the first metal and the second metal are dissimilar especially regarding their electronegativity and have distinctive conductive capacities galvanic activity of various metals is well known the first metal is the metal having the higher galvanic activity and will become the anode 26 less active second metals act as the cathode 28 examples of preferred anodes 26 are zinc and aluminum preferred cathodes 28 are exemplified by copper brass stainless steel and carbon in some embodiments combinations of useful anodes.