Well, I must be honest that this photo is from my geenhouse specimen, not from my vivariums.
The trick for flowering is bright light. These orchids grow very well in shady conditions, but tend to not flower very frequently without a period of high light. I have just recently started switching my lighting in my frog tanks to more intense compact florecents, around 6700 k. I will keep you posted on the results, but so far, I have had several orchids starting to set blooms.
Another trick you can try is the cold water method. This trick works well for some orchids that are hard to bloom. In the wild, even in very tropical locations, there can be periods of cold rain and hail. Some orchids que off these storms as to when to set flower. You might try spraying it with colder water for a week or so, and see if that works. This should be done when any new growth has matured, and there are now new psudobulbs being produced. Try to focus the spray on the roots. Or, if that is hard to do, you may be able to put an ice cube by the base of the plant, which I have heard works well too.
Good luck,
Justin
P.S. Don't take it as a sign that your doing something wrong when you can't get a plant to bloom, most orchids only bloom under environmental stress, so you might be taking too good of care of it.
