Repotting should be done when the mix has soured or deteriorated, or when the plant has clearly outgrown the current pot. Plastic pots are preferable over clay since clay will dry out faster. When repotting, do not divide the plants into small pieces or individual growths. The larger clumps will produce more new growths and more flowers. Place plants in the smallest pot that will accommodate the root system. This should be a very snug fit, as roots will not grow to fill the pot like Cattleyas and Phalaenopsis. After repotting an application of Cal-Mag 15-5-15 is especially beneficial. This helps the plant recover from the shock of transplanting. Begin watering like before, as soon as the pot had dried out.