Someone mentioned it does not just Alk, but Calcium and Mag too?
Winner winner chicken dinner!
Good thing I've already got the 2016 apex. I hope you can adjust the testing schedule. It will be nice at the beginning to get so many results to see how the tank cycles through the day and if introducing new equipment (like a carx) but for simply maintaining once a day alk, once a week ca, and once a month mg would be fine for me.