I just switched to salt and was using the Taylor 0630 and 0718 bottles to test the water. After adding a drop of 0630 to 10ml of water and then adding 0718 I am getting 18 drops in before it turns from milky white to salmon/brick red color. So I felt I was on the high level for my salt. However the swg is saying it is only 2800. So I took a sample up to the pool store a few minutes ago and they confirmed what the swg is seeing. So now I'm not sure what I am doing wrong to be getting high values. Anyone have any ideas or suggestions?