I got a gem tang shipped to me was in rough shape head twitching wasn’t eating wasn’t swimming right very slow moving .. put in qt read up online and suspected it have flukes so did a fresh water dip and saw some come off so the next day I got prazi pro and treated the qt tank got up the following morning and it had cloudy eyes and they were swollen with look like clear skin off one of the eyes so I did another fresh dip and went and got antibiotics for the water and that was two days ago the eyes doesn’t look really better he was swimming better but still not interested in food at all .. what should I do next ? I treat every 24 hours with erythromycin