Urgent help needed - bacterial infection

[VeL]

Hello,
While I was preparing my hospital tank for Ich treatment with copper, two of my tangs got really bad secondary bacterial infection due to the stress caused by the Ich i suppose. The Blue tang has a big wound on his tail. Someone bit him a week ago but I was hoping the wound will heal by itself as I am trying to keep a healthy tank, however that did not happen and lately it got really bad, tang stopped eating. I have been treating/cleaning the wound two times with iodine during the past 24 hours, he is in a net cage in the main display now, still alive but not doing well. Then I noticed today thay the Kole Tang that has been hiding for the past 24 hours is very pale with whitish mucus like spots on him, his mouth looks really swollen and I noticed some fungus around it.
My plan is to get them in the hospital tank RIGHT away and treat with good antibiotics. Then a copper treatement will follow, but first I need to stop the secondary infections as the two tangs will not make it.
Please advice if that's the way to go and what antibiotic is best to use in this case, something that will act fast so I could have some chance of saving both fishes and the rest of their tank mates in that matter. Thank you.

 

[b0bab0ey]

I would probably go with Furan-2, or Maracyn 1 & 2 if you can't find Furan.

 

[VeL]

I would probably go with Furan-2, or Maracyn 1 & 2 if you can't find Furan.

Problem is where I live I cannot find these. I cannot find erythromycin or minocycline or nitrofurazone. It is just ridiculous! The only antibiotic of that kind that I could find and use is Doxycycline but I do not know how to dose that for fish treatement, couldn't find any topics related with it. Please help.

 

[VeL]

Do not want to open new topic so I hope someone answers fast.

How long can Brook be "silent" in the aquarium not harming fish?!!!!!

I ask because my fish get worse. They are salt like covered with one of the clown seems like fungus peeling off but I cannot say if it is brook or fungus. Last wish I added was more than a month ago! If it was brook fishes would've been dead by now, right? So it leaves only option fungus? The yellow tang has his eye clouded, so maybe bacterial infection?

Also guys PLEASE give me an idea how to dose Doxycycline. Fishes are going bad fast, Kole Tang is laying on the ground dying. He seems to have fin rot and white lessions on his body.

And again - can Brooklynea stay passive for 1 month of last fish added before making the fish sick?

P.S.
Just did 1.2ml / 1gal 35% formalin 1 hour treatement on one of the clowns but I cannot see much of improvement, he still has those white pieces peeling off under his fins.