Very nice reading!! This thread worth every line of text . With regards to the bad breakout I've just experienced something similar myself I introduced 2 discus from discus sanctuary in my stendker tank after QT and they were asymptomatic carrier of a bacterial disease, result: Every single stendker discus got ill . The good news is that I managed the situation (I'had to see 5 discus lying horizontally on their side for a while) now they are all safe and sound .