lost a coral beauty today. Fish was bought and in quarantine tank form 6/8 and undergoing prazi since 6/11(2 days ago) . In the qt for less than a week. Water was changed twice (every three days) water parameters seem right on, along with temp and bubble stone running fine. Was eating the past week. Wasn't very active this morning when feeding, but did eat. Other fish in qt seem fine. Came home tonight to him beyond help...any help or Insight???