Potinara, like Cattleyas, I feel pretty comfortable with. They are not very fussy. They are not urgent for water and they bloom easily and fairly frequently – two or three times a year. They come from four related families of orchids: Brassavola, Cattleya, Laelia, and Sophronitis.
In general, I feed the orchids three out of four waterings. I use a liquid fertilizer, balanced, at one-quarter strength. The fourth watering is to flush out any accumulated salts.