The Hagen PT1500 is designed for the following applications:
The Pressure-Flo 700 UVC Pond Water Filter - PT1500 is for use with ponds up to 700 gallons (2500 liters) in size. The Pressure-Flo 700 provides mechanical and biological filtration to remove contaminants in pond water, and also includes an 11 watt UV bulb for ultraviolet sterilization. This pond water filter requires little maintenance and is energy-efficient.
Pressure-Flo 700 UVC Pond Water Filter - PT1500 specifications: