There is an angelfish in the tank aswell, just those 2 fish.
We've had both fish for around 8 years and noticed the red spots a few months ago, I dont think they've been there for much longer but cant be 100% sure because I've only recently taken responsibility for looking after the fish.
Its...
Fish has red bumps and they're getting worse. Tried treating with API MELAFIX for a few weeks but it hasnt improved. The back of the bottle says to remove carbon filter if possible but I'm not sure which part of the filter that is and how long i can leave it out for. I have a Marina i110...