I see the 0.50 now, lol just didn't look far enough down the list. dKH is 8 and the Alk is at 2.86. As I said I am just learning about these test, so bear with me a bit. This dKH and Alk numbers ( I know this is going to be wrong lol) are based on the calicum levels in the tank, right or wrong? I am trying to get an understanding on what these numbers are for what they tell me and how they can be controled, raised or lowered.