I had a different cross a while back and at first it grew like gang-busters! Then this last spring it started doing as you have described and even worse. I threw mine away. Don't have time for plants that don't like me.
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Ross
http://orchids-ross.blogspot.com/
I don't do most Dendros or large, "floofy orchids". For me it's minis (like Angraecoides), Masdies, Paphs, and others that crept in somewhere along the line. See my orchid list for complete collection (usually not current.)