I received a vanda potted similarly with other orchids on a loose small pieces of bark and spongerock. It is a well drained and airy mix but I don't know what's going on in the core and underneath and I didn't like the green plastic pot it came with. When i unpotted, there were several dead roots cause it was too moist in the center while the top is dry. I don't have the space to hang it so it was out of the equation. To make it work, i got a 6" plastic pot and simply stuck it in snuggly with no media. After two hours, I was surprised to see how fast the roots dried and they were all white. I soaked some moss for an hour then squeezed excess water out and simply spread the moss around and in between the roots wedging them very LOOSELY around the plant basically just looks like moss grew on an orchid. It helped retained moisture but still very airy at the same time. Still yet to see how it works in the long run.
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