Clear, Safe, Reliable UV Water Clarification
The Pondmaster 20-Watt Submersible UV Clarifier helps keep pond water clear by controlling suspended algae and improving overall water quality. Designed for easy installation and dependable performance, it can be used fully submerged or installed in-line. The dual monitor “Halo Rings” provide a soft blue glow to confirm the UV lamp is operating — visible day or night without distracting from your pond.
Ideal Pond Size & Flow Rate
| Pond Size | Up to ~3,000 gallons |
|---|---|
| Recommended Flow | Up to 1,800 GPH |
| UV Lamp | 20-Watt (9000-hour life) |
Key Benefits
- Helps eliminate green water by targeting free-floating algae
- Can be used in-pond or out-of-pond for flexible plumbing setups
- Vortex flow chamber increases UV exposure time for better clarity
- Halo Rings confirm operation at a glance
- Durable quartz sleeve protects UV lamp and improves efficiency
Connections & Included Parts
| Inlet/Outlet | 1.5" MPT (male threaded) |
|---|---|
| Optional Barbs | 3/4", 1", & 1.5" stepped barbed fittings included |
| Power Cord | 18' grounded cord |
| Mounting | Submersible or in-line installation |
Package Includes
- 20-W UV bulb (installed)
- Quartz sleeve
- Transformer & 18' power cord
- Stepped barb fittings
- Manufacturer 1-year limited warranty
Replaces discontinued model 02520 / item 02925.

