I still don't get why my TDS tester says a reading of 200-300ppm is hard water and since I'm getting a reading in the 400's wouldn't my water be extremely hard?
this is the meter I'm using.
And this is what literature I found for the TDS readings.
0-50 = Ideal drinking water
50-100 = Carbon filtered water
100-200 = Hard water
200-300 = Marginally acceptable
200-400 = Average tap water
400+ Very high TDS contaminant level