Emperor Aquatics SMART HO ML UV Sterilizers clear pond water of algae blooms in 3-5 days guaranteed while protecting your pond against common waterborne pathogens, viruses, bacteria and protozoa for clearer, healthier water. Our SMART High Output Multi-Lamp UV Sterilizers are 100% Commercial-Grade and are designed for larger pond applications. Our simple, dual-lamp (T5/High Output) design creates a super-efficient UV lamp array that delivers the highest UV-C output based on input watts -vs- cost. Our high output, dual-lamp single body configuration also eliminates the excessive pressure that is common with competitors' "Bank-Style" (single lamp/single tube) UV Sterilizers. SMART HO ML UV Sterilizers are made of heavy-wall, UV resistant plastic and feature a removable electrical end that allows for easy access to the interior components. SMART HO Ballast power supplies drive the UV lamps at peak efficiency ensuring optimum UV lamp output performance and useful life.