This one actually belongs in the Cymbidium grouping (that's where it's entered when i show) but the culture is the same as catasetum so I will post it here instead.
Grown warm and under high light. When in active growth all my Galeandra are set in small trays of rainwater. They love to be wet and have lots of fertilizer. When dormant I pull them out of the pot, trim the roots and wait for the new growth before potting up again. They grow very quickly and bloom off the same inflorescence for months. Very rewarding and easy to grow.