UV compact lamps have an effective range of maximum 30 cm. Due to their low heat emissions, these lamps are perfect for small vivariums. However, an additional heat lamp might be necessary. The performance of compact lamps depends greatly on the use of reflectors. Without reflector, most of the light output cannot be put to use. Since light performance and quality degrade over time, daylight lamps should be replaced every 2 years, UV lamps on a yearly basis.