This UV Sterilizer Replacement Ballast is compatible with Pondmaster UV Sterilizers and Pondmaster Pressure Filters with UV Sterilizers. This replacement ballast is used to replace old, damaged, or defective ballasts in your UV unit.
10 Watt, 20 Watt, and 40 Watt versions available depending on UV bulb size in your filter unit.
Made with high quality, durable materials. Simple and easy to install.