Your B. Nelly Isler is spectacular!! Does it like it more humid than other orchids related to the Odontoglossum alliance? As I am standing mine on a humidity tray, spraying it...and it still has wrinkled pseudo bulbs and corrugated leaves. It has been re-potted twice (in attempts to encourage its feeble root system to develop more), and is now in Orchiata bark (has been for about 3 weeks but is still getting worse). I have isolated it now as it could be a pathogen..Yesterday I purchased two new fungicides..One is Bordeaux mixture and the other is Systhan Fungus fighter...I will use my Burrageara as the guinea pig for the Bordeaux powder (I will apply it just as a power), as I want to see how it reacts (I plan to dust my orchids; esp Phalaenopsis with it as a preventative measure, as even the tiniest bit of moisture is setting off fungal infections at the moment..)