Thank you very much for the kind comments Liz.
Actually, this outbreak is entirely my fault. The lesson I learned here is to never have blind faith or trust in what anyone tells me about discus. A bit more about the disease itself............
IMO no amount of
QT can prevent this from occuring. It can be carried from tank to tank through moisture in the air. My first experience with this plague was from attending a discus worksho p in Atlanta. They held an auction to offset costs, and I dutifully bought discus to help them. It became apparent that anyone who did the same had introduced t his virus to their stock. Through posts on the discus forum I pieced together that some fish sold at this auction had recently been imported from Asia and that all the fish at the auction had been contaminated. Many very experienced discus keepers lost most if not all of their fish.
People were in such a state of panic over this that they began thowing meds indiscrimently at their discus. I believe this only hastened the mortalities. In addition, new arrivals often means overcrowding and pressure on the biofiltering which is extremely stressful to discus. At the time I only had some 20 fish, plenty of tanks, and plenty of seeded sponge filters (I was preparing for new arrivals). In addition my experience taught me never to medicate unless I was sure of what I was treating for, so I only treated with salt. The result was that I only lost 1 discus. Oh, the fish purchased in Atlanta all succumbed. That is....with the exception of 2 juvenile Mandarin Passions that had been imported from Asia.
Fast forward to this outbreak....... There's a member of my aquarium club that is a discus breeder. This is his sole source of income. I decided to visit him 2 weeks ago and was very impressed with his knowledge and hatchery. He had lots of fry at various stages and all of his tanks were healthy and active. There was a tank of yellow checkerboards at about 3 inches, perhaps a dozen of them. Spectacular discus and I wanted some.
He told me these fish had been imported from Asia and that he had them for more than 2 months. I reasoned that if there were to be a problem I would have seen it in his tanks. What I didn't consider is this.... If he had been importing Asian discus for some time, his stock had a built in resistance to the plague. Much like the measles, it might be a single occurance. My discus that survived the first plague seem to be fairng much better than discus that I've added since.
As of this writing, I still have not lost any discus. I'm doing 50% water changes twice a day and treating with high salt and a general (gram negative and positve), bacterial med. I've also lowered the temps a bit. The first fish to have come down with the plague seem to be over it. The ones that it took longer to hit seem to be suffering even more than the earlier contaminees. I don't have much hope for saving them all but I'm doing my best.