I just did an ICP and my results explain my water bowl of death. My iron levels are high along with other metals. My tank started taking a turn when I started my own RODI operations. My TDS is reading 5 in and 0 out. Does an RODI filter out enough metals? I live in an older apartment. I think I am going to get an ICP on my rodi water and for now get water from my LFS.