The glass greenhouse where I raise most of the beneficials organisms has a summer light intensity of 4000-5000 foot candles and is cooled by an evaporative type cooling system. Average summer temperatures seldom exceed 90'F and the low temperatures are in the high sixties. In winter two 1000 watt High Pressure Sodium lamps maintain a 16 hour photo period. The high temperatures in winter are about 75'F and the minimum is in the high fifties. In a building where A. fusciventrus and the longtail mealybugs are raised the light is supplied by two eight foot long high intensity cool white fluorescent tubes.
Temperatures are similar to the greenhouse but the humidity is much lower.