hi everyone!
so my common goldfish mr. whiskers has been getting used to the aquarium light, but in the process he has been thrashing himself about (which he is slowly getting over). anyway, he somehow brushed himself against something ( an ornament or piece of broken glass) that took off a scale. it is only one scale and really hard to see in pictures, as i've tried to get illustrative pics.
so should i add salt to the tank so it will heal, or, since it is just one scale, should i just leave it alone?
(my tank does have broken glass in it but the sharp edges have been filed down so that they are round, and it has been in the tank for ten years.)