It depends what is in the water. The tests pictured are good for moderately soft water species, but we've no idea what other substances or pathogens may be present. If you are serious about this, you could take a sample to a professional lab for a complete water test including microbiotics, which may be expensive.
In your area (NB) you are in a temperate climate. That means the fish in the local ecosystem have to deal with various pathogens and thus evolve to deal with these. Tropical waters are different in the pathogens and fish. This is one of the serious risks of putting any tropical fish/plants/snails in the local ecosystem...there could be pathogens that local water life cannot deal with.