Still would get that qt
. Your going to need it when you start over again.
First thing I would do is fire that LFS
. I did not see one bit of good advise reading through this thread that he gave you.
Second, if the Scopas is still alive, why not get a qt
set up real fast and try and save him? I would suggest a cupramine treatment (in qt
) because this sounds a lot like velvet.
Other than that leave the main tank fishless for 8 weeks, this will allow the parasite (whichever one it is) to go through its lifecycle and die off. Then you could start over again, slowly this time. Qt
all new fish for 4 weeks from now on and you could be golden.
As for the brown stuff, that is another story. Sounds like diatoms to me, which is normal for a young tank.
Start another thread in the general forum and we can tackle that problem, right now it isn't a big deal. I would worry more about getting that qt
tank set up real fast and saving that Tang.