I have been quarantining a coral beauty and flame angel in a 29g biocube, each has a half of tank separated by a divider. The coral beauty has a sore below his eye which may be HLLE or Hole in the head disease. I know stress may be a factor and since he is in a small tank should I take the leap and transfer him to the big tank (90G). Since there is really no other treatment. I originally thought he nicked himself on a rock on wednesday, now three days later it looks worse.