Oase Cleartronic UV Clarifier Aquatic UV Sterilizers - 7 Watt

• The ClearTronic works to promote clear water and healthy fish in your fresh or marine water aquarium
• Ideal for preventing disease that can affect aquarium inhabitant
• Effectively eliminates algae and cloudiness
• Fresh and marine water compatible
• Utilize the indicator light to safely and conveniently check your bulb's effectiveness without opening the unit