Ok, I have another thread and no one is replying so I will try this. My discus had popeye and I have treated the tank wit Maracyn-TC and today his eye looks worse. Should I just do a big water change and continue to do one every day until it looks better or just give the medication time? I don't have another fw tank to put him in. Is popeye something that is contagious? Tanks for any help.