fungus or bacteria spreading fast on cattleya

[Thriodien]

Thank you, all of you for the good tips. I don't want to throw away the whole plant yet, it is separated from the others. I agree that it needs radical treatment and i decided to cut off the infected parts and use the hot knife method too. Only one bulb remained but maybe it will be enough to survive. Of course i continue to treat it with chemicals and i hope for the best. I had to cut off a bulb with a flower spike and opening flowers , so waiting for the result can't be any harder Thx once more!