I don't know any way to measure 0 KH. Are you sure you did that test right? My test kit has me take a small sample of water in the tube. Add a drop of the reagent, which colors the water blue (as I recall), then keep adding a drop at a time and shaking it until the color changes to yellow. The total number of drops, including the first one, is the degrees of KH. I don't know what the chemicals you added are - is the "clear Ammonia" a chemical to neutralize the chlorine and chloramine? If not, you need one, like Seachem Prime.