Unknown disease

[Ben027]

Hi all
Have an unknown issue currently in my QT tank

All fish have been in QT for minimum 3 weeks in approx 0.4 cupramine. Total 5 weeks in QT for most fish
Have just stated prazi thinking it might be fluke/ worm related

Only effecting coper and butterfly and sailing tang at the moment. White cheek tang died yesterday and seemed to be covered in what looked like small flukes.

Fins on both fish including tails seem milky without any specific spots on the fins or bodies

Other fish wrasse, antheas, gobies and lavender tang all seem fine at the moment.

Will try and get some more photos soon

Any ideas would be great
Thanks
Ben

 

[EmdeReef]

I would suspect velvet given the number of spots. Are you sure you have the copper at right level? What test kit are you using?

 

[Ben027]

Using a Salifert test kit. Colour is just under 0.5 has been the same for 3 weeks.