The Emperor Aquatics Smart UV Sterilizer is watertight and safe to use with all types of ponds and aquariums. Each sterilizer is constructed of thick, UV resistant plastic that increases durability and longevity. All models feature quartz sleeves and lamps rated for 9,000 hours.For aquarium or pond use-For aquariums up to 500 gallons. The 500 gallons rating assumes the unit is being used as a clarifier (algae) and sterilizer.-For ponds up to 8,565 gallons65 watt T5 UV lampIn lineConnections: 1.5" union inlet/ 1.5" union outletA pump is a required. The required flow rates:-Algae: 2855 gph maximum, 1710 gph minimum-Protozoa: 925 gph maximum, 570 gph minimumDimensions: 70.5" X 3"Accessories:Emperor Aquatics 3" Mounting BracketNOTE: This item is drop-shipped directly from the manufacturer. We do not offer expedited shipping for this item.