I grow some things in lava rock/bark. One grower round here keeps dend in the lava rock and they all seem fine. I think I still have one here somewhere. It drains well.
The canes on your plant look nice and green. I would just let it be, give it achance to recover if need be, and take care of it as usual.
Last edited by orchidegg; 05-07-2009 at 12:17 AM..