Hi, I'm pretty sure my corydora has cotton wool disease on its top fin and I'm not really sure what to do. We've had him quarantined for nearly two weeks and are daily treating with PimaFix but it doesn't seem to be helping at all, rather it's growing worse.

The good news is that he seems completely oblivious to it all... he still swims around like normal and scrounges around for food.

Is there anything else I can do?

Edit: I've tested the water and all parameters seem to be fine. No nitrite, nitrate or ammonia and the pH seems average

Late update: after treating the tank with melafix for a couple weeks, his "wool" just fell off and what seems to be his wound seems to have just healed. I don't know if it was just luck or what but he's made a full recovery :)