A new shoot (leaf) will come from the base of the older shoots. New roots can (and will) emerge from time to time almost anywhere. As to fan, mine blows directly on the plants and roots 24/7 but the humidity stays up at 90-99%. Air movement is good for the plants and roots, dry air moving past roots will stop their growth pretty fast.
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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.)
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