I use one teaspoon per gallon when I initially set up a tank, then about once a month make a partial water change, adding the same ratio of salt to the new water.

当我设立新缸时，我习惯在每加仑的水中加入一茶匙的海盐，然后等过一个月后再换部份新水同时再加入同样比例的海盐于新水中。