yea salt at some rate is good for all fish.it turns out i woke this mornin to find my betta with a big white spot on his head.so im not even sure it is a fish killing them now.i have a crap<<< load of snails but do not want 3 more clowns.i should just feed like once every other day then for two weeks.i always worry im starvin the fish.what is the white spot on my betta?white spot disease.i havent noticved any others with it.help