Mike, any fish you get "in-hand" so to speak, mix some sea salt in a bucket (5gal) like 2-3 Tbsp of salt in with water and put each fish in there for 15-20 seconds.. That will kill anything on open wound sores and help replenish slime coat. Won't fix the entire issue but it will help each fish.
It does help with gill efficiency too..

Last edited by Snipe; 05/21/19 07:15 PM.