I have an Hanna Checker® HC - HI755, I use that one to test my alkalinity on my saltwater tank but I would like to know if I can use it for testing freshwater alkalinity as well.
I know that hanna has one for freshwater but I would like to know why they have two different checkers for the same.
I know that hanna has one for freshwater but I would like to know why they have two different checkers for the same.