I only put 50g salt in mine and then spoon it into icecube trays and freeze it. When frozen I pop the cubes into bags and keep them in the freezer and pick out how many cubes I need, when I need them.
I figured we didn't need to have as much salt as the recipe says. I can always add a little salt to my dinner at the table, but it is darned hard to get out of a dish if I've overdone it!