ive been using medecation against slime disease for 3 days now and they are still akting weird, 1 of them is swimming alonh a root and rubbing his body against it and somtimes he lays at the side and like rubbing his side at the ground
if the only symptems are the marks left from the slim and other than that the fish are looking better then you don't need to re-medicate, but if the slime is still there, and growing larger then I would suggest you re-medicate.
either way though, I would do a large (50%-75%) water change as the first thing that I do
and add some salt (1 tablespoon per 5 gallons assuming you don't have any already in your tank)
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