Deadly Disease - plz identify

[mujtaba]

Its been wisely said that " Life s too short to learn from your own mistakes", yet world is full of ppl like me. Purchased 5 blue sapphire damsels, added to QT but after 2 days since all were looking fine, transferred to DT. Now here i m, lost my 7" Blonde Naso, 5-6" Adult emperor and 5" powder brown tang and 4 of 5 damsels in 3 days to some disease, which i suspect is brook. i have transferred remaining fish (Foxface, bicolor angel, OC clown and one damsel) to QT and treated with 34mg/l of Flagyl.
But since i m not 100% sure of the disease, can someone plz confirm that whether its brook.

 

[snorvich]

Quarantine should be a minimum of 5 weeks, ideally 4 weeks after TTM. Does look to be brook or possibly uronema.

 

[mujtaba]

Quarantine should be a minimum of 5 weeks, ideally 4 weeks after TTM. Does look to be brook or possibly uronema.

Thanks Steve for the guidance. Considering its brook, plz advise;
- Is one dose of Flagyl sufficient?
- Should i maintain 34mg/l for 5 weeks? (i.e. add medicine with water changes)
- How long should i leave my DT empty? (12 weeks?)

Thanks,