Hi two of my sterbai had this white slime stuff on their sides, I have no idea what it is. I treated the tank awhile ago with myxazin which did nothing then later on I treated it with this anti slime stuff but the medication was an old bottle so I'm not sure if it's still effective! One of the cories only had this very slightly and it has cleared up but the other one has it quite bad. It doesn't seem to effect him and he swims around and feeds normally with the other cories like its not even there so could anyone help identify this with possible causes thanks.