Help with illness ID

[hondacbr600rr]

Can anyone help me determine what’s going on with this koi scopas please.

It was in QT for 11 days when symptoms appeared. I first thought it was velvet as I noticed the “fine powdered sugar” appearance on the fish yesterday. Today you can see what looks like more of a bacterial issue?

The fish was treated using copper power at 2.5PPM, metro, and Prazi.

Otherwise it’s eating and does not appear to be too bothered.

Appreciate the help.

 

[hondacbr600rr]

 

[vetteguy53081]

THIS IS BACTERIAL AND MAY HAVE STEMMED FROM ANINJURY AND TREATMENT SHOULD BE APPLIED USING SEACHEM KANAPLEX IN A SEPARATE TANK WHICH IS A BROAD SPECTRUM TREATMENT

 

[hondacbr600rr]

THIS IS BACTERIAL AND MAY HAVE STEMMED FROM ANINJURY AND TREATMENT SHOULD BE APPLIED USING SEACHEM KANAPLEX IN A SEPARATE TANK WHICH IS A BROAD SPECTRUM TREATMENT

Thank you, I will get the Kana started.

Is it safe to assume that if it were also a case of velvet, the rest of the tangs in Qt would also have gotten it and shown symptoms within the 11 days they have been together?

 

[hondacbr600rr]

THIS IS BACTERIAL AND MAY HAVE STEMMED FROM ANINJURY AND TREATMENT SHOULD BE APPLIED USING SEACHEM KANAPLEX IN A SEPARATE TANK WHICH IS A BROAD SPECTRUM TREATMENT

Also, any way to know if it’s likely contagious? Just wondering how long I should wait once the QT is done on the other fish before it’s safe to move them into their tanks.