mrsmop1973
Aquarium Advice Newbie
I've just had a message from a friend that is babysitting my 2 three year old black moors while I'm working abroad. They're in a 60L biorb tank. I did a 50% water change before I left 3 weeks ago. Now one of them has a weird bubble forming just above one eye. I haven't had any previous health issues with these fish. What should I do? My friend doesn't have much fish keeping experience...