is there a cutoff level for ppm of tap water where it shouldnt be used? i use distilled and am wondering if i even have to.
Dr. VanNostrin Reviewed by Dr. VanNostrin on . ppm of tap water - whats tolerable? is there a cutoff level for ppm of tap water where it shouldnt be used? i use distilled and am wondering if i even have to. Rating: 5