Grammatophyllum measurianum

[mjHuntingtonBeach]

Does anyone grow this orchid? I picked it up at a local orchid species club annual auction fundraiser. It originally had two bulbs, in what appeared to be a solid mass of sphagnum and bark. well half of it died off, I then got a very small new growth last year, I put it in a small pot with lecca at the bottom, a mix of coconut husk and sphag on top, and it formed a small new growth. Clear pot but I never saw any roots reaching the edges of the pot. Now, it is pushing out a third growth, already bigger than the small other two, and I suspect it will be rooting soon. I was hoping to figure out what to put it in now. I think maybe a 4 or 6 inch pot is about as big as I can go this year.

Any advice on repotting or the culture of this beast?