Yes I added an air pump and running the skimmer without collecting. Increased tank surface agitation with the return pump and Wavemaker as well. I’ll do one more treatment of prazipro on Wednesday (7 days between treatments).Not sure this is sworn issue but rather skin irritation and mysis mixed with ich if I recall
Coppersafe would address that however you can do a water change and one more prazi treatment if fish is responding to treatment
I assume you added air stone as prazi will reduce oxygen and even appetite
If ich is present, wouldn’t it manifest in the other fish in the tank as well?