Jebao Pond Clarifier PU-18 — 18W Inline UV Clarifier for Green Water, Treats Up to 4,400 gal

The Jebao PU-18 is a non-submersible 18-watt clarifier that reduces green water and odors to restore visible clarity in ponds and water gardens.

The PU-18 uses a high-intensity 2G11 lamp and a weather-resistant transformer to treat suspended algae and organic haze in backyard ponds, koi pools and water features. It installs outside the water and connects inline with your pump and plumbing, making it simple to add to new or existing systems. Included adapters and a compact housing let you position the unit vertically or horizontally to match your layout.

How does the PU-18 improve pond clarity?

The clarifier emits targeted light that destabilizes microscopic free-floating algae and organic particles, making them easier for filters or settling to remove. It doesn't mechanically filter water; instead it enhances your filtration system's effectiveness so visible clarity improves faster.

• Treats green water and reduces unpleasant pond odors
• Works inline with existing pumps, tubing and filters
• Improves settling and filter capture of fine particles
• Recommended lamp replacement after ~8,000 hours for consistent performance

What size pond can this unit handle and how do fish affect capacity?

Rated treatment capacity depends on whether fish are present because stocked ponds produce more organic load. For ponds without fish the PU-18 is effective up to about 4,400 gallons; in systems with fish aim for the lower guidance to avoid overloading the clarifier.

• Up to 4,400 gallons in fishless water features
• Approximate safe coverage ~2,000 gallons when fish are present
• Use with appropriate mechanical/biological filtration for best results

How is the PU-18 installed and maintained?

Installation is a straightforward inline connection using the included adapter set. The unit accepts common plumbing sizes and can be oriented vertically or horizontally to fit behind filter boxes or under benches. Routine maintenance is limited to lamp replacement and avoiding direct sun on the transformer for longevity.

• Includes fittings for 3/4", 1", 1-1/4" and 1-1/2" tubing
• 22-foot cord to the weather-resistant transformer — keep transformer out of direct sun
• Replace the 2G11 18W lamp about every 8,000 hours (roughly 11 months of continuous use)

What safety and compliance details should I know?

The PU-18 is designed to be mounted outside the water body and wired to its external transformer, reducing exposure to pond water. Follow local electrical codes when connecting power, and dispose of used lamps responsibly. The product is identified under EPA establishment number for reference.

• Non-submersible housing requires dry mounting outside the pond
• EPA Establishment Number: 97745-CHN-1
• Observe manufacturer guidance on lamp disposal and replacement intervals

Who is this for? The Jebao PU-18 suits pond owners and landscapers who want an easy-to-add clarifier to reduce green water and improve filter efficiency without major plumbing changes. It’s especially useful for backyard water gardens, small koi ponds, and seasonal ponds where a compact, low-wattage unit can complement existing filtration. If you manage a heavily stocked or very large pond, consider sizing up or combining clarifiers with robust mechanical and biological filtration for optimal results.