just keep up water changes..
Due to some intense bullying, one of my Discus is missing a few scales on one side of its body, and a couple have "bruise" marks on the pectoral fins. I'm a bit scared that fungus or some other infection might appear. An experienced friend says dose with acriflavine. I have a bottle of 1% solution of the stuff. How much do I put in my 200-litre tank?
The scales have grown back but there is still a whit-ish patch on a pectoral fin of one fish. After 5 days acriflavine treatment. I'll be changing 50% water daily for the next week and hope that will get them OK again. Otherwise the fish look good.