What is this on my orchid?

[butterfly_muse]

Originally Posted by Gail

Could it be salt build-up? I can't detect the fuzz in your photos, but the color on the bark looks like it.

Since you don't want to repot right now, it wouldn't hurt to flush the pot well.

I don't know, I just got the plant. It's a Just Add Ice orchid, I don't know if that means anything (like, are they notorious for overfertilizing?)...How would I go about flushing the pot? The poor roots look pretty crammed in there, but I know phals tend to like that. Should I just run water through it? I guess that would give me an idea of its drainage situation, yeah?