Fiat, nope it is just a 6-inch fabric container. I think it is really tight with roots inside right now, have not repotted my zygo for 3 years now. Not too worried about it, since root system breathes nicely in that fabric container.
Speaking of Phals, just repotted my Phal in bloom which was give to me in early October, glad I repotted, it is choking full of sphagnum moss in the middle, no wonder the leaves are sulking, the roots are choking there..anyways, repotted it now, am using my chunky lava rock this time for this Phal.