I hope I have not given the impression that I have a 100% success rate with backbulbs or have not killed my share of plants. I would certainly not rate myself an expert grower. On the other hand, I work with scraps of plants that would get tossed out in most greenhouses.
This plant was one of those scraps. It was the weakest pseudobulb in a pot of weak pseudobulbs. As I walked up to the plant I wondered it it was time to toss it out. There was green but it was faded and it looked as if the water was almost all used up.
Peeking out of the pot was a sprout. When I took it out of the pot I saw that there was more green than I could see from above. I am going to put it back and let it grow a bit more before potting. That is one of the great things about rocks as a medium. You can put it back and settle the rocks around it gently without damaging the plant.