|Re: unidentified attachment on tail fin|
Subject: Re: unidentified attachment on tail fin
by fcmf on 2019/4/7 15:42:27
I'm seeing a black mark on the tail fin plus foliage/planting - but maybe someone else will be able to see better what you're referring to. In the meantime, what are your current results for ammonia, nitrite and nitrates? The reason for the question is that this may help work out what the black mark is on the tail fin.