Aqua Ultraviolet Classic 240 Watt UV Sterilizer, Black, 2" Artwork making it an excellent choice

making it an excellent choice for koi ponds

making it ideal for larger koi ponds

Excellent for larger koi ponds

19' head: 0 GPH (max head)

and poor water quality — all without adding chemicals

Aqua Ultraviolet Classic 240 Watt UV Sterilizer, Black, 2" Artwork making it an excellent choiceClassic 240 Watt Unit, 2", Black, 6 Lamps Ultimate sterilization power for the largest ponds and high demand water features. The Aqua Ultraviolet Classic 240 Watt UV Sterilizer is the most powerful unit in the Classic series, designed for very large ponds, commercial water gardens, and demanding aquatic systems up to approximately 17,000 gallons (with proper flow and turnover). This high output UV C sterilizer rapidly and effectively destroys free