Jebao Pond & Aquarium UV Clarifier STU-55 55W Stainless Steel — External, Treats up to 8,800 gal

Jebao STU-55 is a 55-watt stainless-steel, non-submersible clarifier designed to reduce green water and improve clarity in ponds and water gardens up to about 8,800 gallons.

If your pond or large aquarium develops cloudy, algae-tinted water, the Jebao STU-55 offers a compact, user-friendly ultraviolet clarifier that pairs professional-grade UV output with simple installation and low maintenance. Built with a durable stainless-steel housing and a long-life 2G11 55W UV lamp, this unit treats green water and helps minimize unpleasant odors when used as part of a filtration loop or pump-driven circulation system.

How does the STU-55 help clear green water?

The unit uses ultraviolet light to interrupt algae and suspended microorganisms, causing them to clump and become easier to remove by your filter or skimmer. It’s intended for external mounting on the discharge or return line and works continuously while water flows through the chamber.

• 55-watt 2G11 UV bulb rated up to 8,000 hours for steady disinfection action.
• Effective for ponds and systems up to roughly 8,800 gallons under typical conditions.
• Non-submersible stainless-steel tube for durable, UV-transparent flow treatment.
• Helps reduce odors by lowering suspended organic activity in the water column.

What are the installation and connection options?

The STU-55 is designed for flexible mounting: it can be positioned vertically or horizontally on a hard surface near the pump or filter return. It accepts common hose sizes and a PVC adapter so it integrates with many existing setups without specialty plumbing.

• Includes fittings for 1", 1-1/4", and 1-1/2" hoses plus a 2" PVC adapter.
• Approximate unit length 26.5 inches for straightforward placement in equipment bays.
• 22-foot cord with a weather-resistant transformer for outdoor-ready power connection.
• Avoid direct sunlight exposure to maximize housing and lamp lifespan.

How often should the bulb and unit be maintained?

To sustain peak clarifying performance, replace the 2G11 UV lamp after about 8,000 hours of use — roughly every 6–12 months depending on runtime. Routine checks of seals and fittings keep leaks and flow loss from reducing effectiveness.

• Replace 55W UV lamp at approximately 8,000 hours for best results.
• Inspect O-rings and hose connections periodically for wear or leaks.
• Wipe exterior stainless steel clean of debris; avoid scraping the quartz sleeve if present.
• Keep the transformer and power connection dry and shaded where possible.

Who is this for? The Jebao STU-55 is best suited for pond owners, water-garden hobbyists, and aquarium stewards who want a reliable, externally mounted UV clarifier to manage algae blooms and improve water clarity for systems up to about 8,800 gallons. It’s a practical upgrade for new or existing filtration setups that need stronger UV treatment without complex plumbing changes. Note: the clarifier complements mechanical and biological filtration rather than replacing them; follow local electrical and safety guidance during installation. EPA Establishment Number: 97745-CHN-1.