Aquascape 95038 UltraKlear 5000 UV Clarifier/Sterilizer for Pond Water Features, 55 Watts Effectively clears unsightly Green water (Pea soup) algae blooms in ponds up to 5, 000 gallons in size with 1, 500 GPH flow rate 55-Watt T5 high-output UV bulb maximizes performance Swirl sleeve increases efficiency up to 50 percent over traditional clarifiers Includes mounting bracket and necessary fittings for easy installation 20-Foot cord length; 3-year limited Warranty