So, I'm using Cihilid Lake Salt in order to to raise pH and all that. The water hardness is normally about 250 with our water at it has reached and held 425, however the pH has remained at 7.0 with the alkalinity around 50. How often should I be adding the CLS? I first introduced the amount indicated on the container. After nearly a week the hardness increased but I haven't seen anything from the other two ratings. I added the same quantity again and then two days later when doing a water change I added the appropriate amount according to how much water I add. About 18 hours later I am getting the EXACT same ratings.