Hi Everyone

thought I'd better drop in and say Hi

.
I have two goldfish which I inherited from my daughter when she went round the world!3 years ago (she got them from her friend, who now lives in NZ!!)
They were tiny when we got them but are now huge!! one's about 6" and the other about 8". I thought goldfish were easy to look after... not anymore!!!
I've struggled with finding help with ailments, the usual whitespot and fin rot so have bought books and got some help from my pet shop but now one of the fish has a sooty appearance?!

...blackish edging on it's finsand on parts of the body, anyone any ideas? the larger one is ok
I use a Bio orb30 and I have in a firstaid filter (they had fin rot last week), I've checked the water quality and it seems ok
Can anyone advise?
Starfish

