AquaMiracle Replacement Light Bulb for Aquarium Filter, Fish Tank Filter Replacement Parts, Including 1 x 5W Light Bulb with TimerPACKAGE INCLUDES Including 1 x 5W light bulb with timer. REPLACEMENT INTERVAL As a general recommendation, it is advised to replace the lamp every 12 months. However, this frequency may vary depending on the duration of daily lamp usage. If you notice a significant decrease in water clarity, it is advisable to replace the lamp. SAFETY To ensure safety, the lamp is permanently attached to the power cord. To replace the lamp, simply remove the filter