Advantage UV Sterilizer's are the premium choice for water sterilization for a 200 litre salt  water aquarium or up to 800 litres for fresh. When used as a sterilizer it will control the amount of harmful bacteria creating a healthier environment for your tank's ecosystem. When used as a clarifier it will clear ponds up 8000 litres (respectively) with 50% to 75 % plant coverage. 

Why Aqua Ultraviolet is different - 

• Industry's longest lamp life: 14 months
  
• Destroys harmful bacteria and Protozoa
  
• Quartz Sleeve allows for 99.9% transmission rate
• 3/4" Barb fitting allows for easy connection
• Clear quartz viewing area tells you your lamp is on
  
• Designed for both indoor and outdoor use
• Manufactured in the U.S.A
• Limited life time warranty on housing