Pyramid Butterfly help

[vetteguy53081]

Have pyramid and absolutely no issues with it

 

[drawman]

With the speed that these fish are dying I would treat all as if they have velvet. Agree with @4FordFamily 100%

 

[BantyRooster97]

Since my wrasses are unaffected, possible they are carrying velvet but not being affected by it? How should I treat?

Also, my QT was also going to be their home for a while. It is a reefer 170 set up with live rock, sump w/fuge etc. No corals to speak of. Was only going to move the tang & P B to my larger 105g once they had been in the QT for a couple months with no issues. So, when I treat, will the drugs get in the live rock etc? Kill the fuge?