If the plant was purchased in a pot, then it is probably already in a quality potting mix and requires little more than watering and grooming. Epiphytes rarely need to be repotted.
Epiphytes grow on other plants. They can be grown in a light, well-drained mix of bark, composted peat and perlite, or, rather than growing in a pot, epiphytes’ roots can be wrapped in sphagnum moss and the entire plant can then be mounted onto wood or other surfaces.
When repotting, start with a good quality, sterile bark mix. Select a container with a drainage hole or be prepared to drill holes for drainage if there are none.
Prepare the container by filling with potting mix up to 2” (5cm) from the rim of the planter. Make a small hole in the soil slightly larger than the root ball either by hand or using a trowel. Insert the plant into the hole and press soil firmly around the roots and just covering the root ball. Once potted, water thoroughly to settle the soil and give the plant a good start.