brown marks
 

i´m having problems with this cattleya. since I bought it for some different disease it´s growth has been very poor with no flowers, but few months ago I noticed brown leaves and the new growths are very weak.
can anyone help me??

Have you tested this plant for a viral infection?

no I haven´t. I don´t have the virus tests in my country. no other orchid near this one looks the same, is the only one and I think it has been like this almost a year