The Hana does not need anything but tank water, there are two test tubes, fill them both with tank water up to the line on the tube.
Cap one, the other one add the reagent powder to the vial and cap it.
The powder will disolve in about two min.
Place the tank water only test tube in the checker, push a button, it will tell you when to add the tube with the reagent in it, and then it is pretty much done.
You are supposed to clean the test vials well, as anny staining will cause trouble.