After replacing my tridents reagent my Alkalinity is reading 6 dkh and my Calcium is 325 and Mag. Is 1100 I have checked them with my Salfert test kits and my Alk. is 8.5 Cal. is 420 and Mag. is 1290 I think the reagents are bad or just something wrong with it the batch before this one everything was reading higher than what they were. Anyone else having this problem?