The deposits in your bottles are a stable compound calcium chloride or carbonate which precipitates out once ionization is saturated with calcium ions. Kidney stones are caused by excessive calcium manufactured by the body under abnormal circumstances like hyperparathyroidism , hereditary hypercalcuria etc. There is no way in which the ionized water can elevate the serum calcium since the amount is very minimal and normal metabolism will regulate the serum levels precisely. You cannot get kidney stones by ingesting Kangen water unless you have a genetic trait for stones or are taking massive amounts of calcium like Tums and Vitamin D. Alkaline water promotes calcium deposition in bone, where it belongs, acid states like uremia remove calcium from the bones. I trust this addresses your concerns,

Regards, Horst S Filtzer MD FACS

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Kangen Hexagonal structured water