Since I bought my last severum , which was 3 month ago I started to have problems. My 3 severum has white marks on their fins . I don’t know if it is ick or fungus. Don’t know what right treatment to choose. And it’s only severum that is suffering, other fish look good . I tried to get best pictures. If need more I’ll try to take more
Ammonia 0
nitrite 0
Nitrate 20-40 (my tap water is 20-4
Ammonia 0
nitrite 0
Nitrate 20-40 (my tap water is 20-4