Be sure to remove all drainage water from the decorative cover or from the saucer after you are done watering. Just as we humans don't like to have constantly wet feet, no plant will do well if it sits in puddle of water for any length of time. Kalanchoe in flower need only very little fertilizer. Generally the plants should have a good supply when you buy them in the store, so you should not need to worry for the first few months. If you want to keep your Kalanchoe past the first flower, start fertilizing only when you see new growth on the plant.
Many plants have a very precise built-in clock.
This clock measures the length of days vs. nights, and allows the plants to determine the time of the year. Plants use this information to decide when to grow new leaves, or when to flower, or when to drop the leaves and go into hibernation. Kalanchoe are so called short-day plants. Like Mums or Poinsettias, Kalanchoe will begin to make flowers when the days are shorter than 11 hours. From then on it takes about 3-4 months for the flowers to develop.