Good morning all! So I have several Hanna checkers, but I have recently read a lot of negativity about their calcium checker. So I am just curious about what people on here like best for that. I do not yet have that one, but was getting ready to buy it when I started seeing some bad feed back about it. I want one that is simple to perform / read, which is why I do prefer Hanna, of course. But accuracy is more important.