UVB lamps allow reptiles to synthesize vitamin D3, which is essential for calcium metabolism. This lamp (rating 5.0) is suitable for tropical species and 10.0 for desert species. UVB radiation is filtered by glass, so it is important to position the lamp wisely. The wattage helps to choose the lamp's range. Even if the lamps are low, it is recommended to place them in an E27 ceramic socket. When used regularly for 10 to 12 hours a day, it is advisable to replace the lamp every 6 months.