Ensure your aquarium's filtration system is working to the best of its ability by replacing the bulb! These bulbs are designed specficially for the Sicce UV-C clarifiers to offer you long lamp life and reliable performance. Salt or freshwater. Compatible with Sicce UV-C Clarifiers, the replacement bulb helps maintain crystal-clear water by neutralizing harmful microorganisms such as algae, bacteria, and parasites. Lamp life up to 8,000 hours.