Choose a spa pot with a planting area roughly the size of your dendrobium or up to 5-inches larger in diameter if it has not been re-potted recently.
Tilting the dendrobium pot onto its side, very gently coax it out of the pot by lightly pulling the base of the main stem outward toward you. Loosen any roots that are encircling the root ball or that have old bark embedded in them. This will help encourage new root growth and uptake of nutrients.
Set the dendrobium into the top portion of the self-watering spa pot. Collect any of the orchid bark or planting medium that may have fallen away during the transplant process and put that into the pot.
Add additional orchid bark or planting medium so that the orchid is stable and supported in the pot.
Pour water into the lower reservoir to its maximum level. Monitor your orchid in its new home daily for several weeks to gauge the uptake of moisture. This will help you to establish a regular water refill schedule.