white dust?

[daniella3d]

If you did not add anything for months then it is not marine velvet.

However it could be some bacterial infection.

Discus plague is caused by a nasty bacteria that can be present on some fish and kill any new fish coming in contact with it that are not immune to it.

If we think about the flesh eating bacteria, it is present in our environment yet for no apparent reason it can start eating people flesh.

Maybe when you put your clownfish back into your tank it cought some bacterial infection and that spreaded to other fish?

I cannot be marine velvet if you did not add anything to your tank.

Does not make sense in deed.

When my discus cought the discus plague, they were covered with a white powdery looking film. Some were floating on the side half dead. I had to treat them with potassium permaganate baths each day for 4 hours at a very critical dosage and they all survived, but I was very tired by the end of that week. All this for a bacterial infection that became very potent very fast.

[ickmagnet]

Don't know what it was but I was never able to catch my green wrasse. He hides into the sand and makes it difficult to even find him. Anyways, he is swimming around with no apparent symptoms. The hippo tang is in the hospital tank and he looks fine as well.

Everything else is dead. Just like that. Craziness. That's a real lonely 180g.

Maybe it was a case of out of control ick. Every time I have seen ick, it has been a bunch of pin prick type marks. Also, with ick, it took a while before the fish would pass away, giving you enough time to take it out and treat it. With this, the fish was swimming around and eating one day but dead the next.