I have and it grows on coconut husk. I tried to water it, but seemed like the coconut husk didn't keep the water too long to make the orchid stays humid. So I came up with and idea to make self watering pot where the coconut husk is slightly dipped into the water in a jar. It has new young stem after a week I treat it that way. I put the fertilizer into the water too sometimes.
Just wondering if this self watered pot idea effective enough?