sandtiger said:Is adding salt a good idea for loaches? I didn't think it was.
If you must kill them I would have to say put them in the freezer or slam them as hard as you can against a hard surface...gross but fast. I would not kill them. Treating the whole tank is the best idea because even if you cannot see it yet it is likely the whole thing will end up with ich...its not a guarentee but just to be on the safe side keep treating, and as long as your treating anyway you can try your luck with the loaches.
salt aint gunna hurt the loaches