Review on 🔍 Accurate Measurement Made Easy: Salifert Magnesium (MG) Test Kit by Kate Windish

Unfortunately this is the only tester I could find. Hard to understand. As for accuracy, it changes from one color to another as different drops of liquid are added. It changes to this color before I add the third liquid. Can make me believe there is so much magnesium in my aquarium that everything has to die. Since not everything dies and this test is off the charts for what they have I can only assume this is wrong.