Much appreciated watermom. I am looking forward to seeing algae a thing of the past. I am dealing with my compu pool salt controller for my chlorine level has been low. My salt level was low (1550 ppm) so I have added salt to get the salt level @ 3500+ ppm to see if this cures the problem. What benefits does the Taylor K2006 test kit offer that the HTH brand 6 way tester cannot? Thanks in advance. Mike