The fertilizer must be urea free. Apply once every two weeks. Be careful how strong the concentration of your fertilizer is when diluted in water. Too much fertilizer can cause root burn and leaf tip burn.
Allow the pot to drain when watering.
RO/DI is the preferred kind of water to use when watering to ensure the roots don't get damaged due to excessively high dissolved salts or minerals in the water. For this plant, it is not a neccessity. Once you start getting into species plants, in particular plants in the Pleurothallis alliance, RO/DI water is crucial.
Do not overpot. Pot up in 1/2" increments and only when you start seeing roots climb out of the pot. Orchids can tolerate being potbound.
Change the medium once you start seeing the medium break down. In your case, it will most likely be potted in wood chips with possibly some perlite or charcoal. Perhaps only the wood chips. At any rate, if the wood starts breaking down you will start seeing debris draining out the bottom of the pot when you water. The wood chips will also get darker brown with age. If you pick up a piece and smush it between your fingers and it's mushy, that is also a sign of it breaking down. Once you start seeing mold or fungus throw out the medium immediately regardless of how long it's been in the pot.
Humidity of 605 to 70% is adequate.
Misting is not necessary.
Moderate to good air circulation helps.
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