1. Product Overview
This manual provides instructions for the LSE Lighting UV Bulb, designed as a compatible replacement for the Jebao 75W Clarifier STU-75. This 75-watt UV-C lamp is engineered to deliver high-performance ultraviolet light for water clarification and algae reduction in pond and aquarium systems. It features a 33-inch quartz glass tube and a T5F ceramic base with 4 pins on one end.
The bulb is rated for up to 10,000 hours of consistent performance and is manufactured in an EPA Registered Establishment (No. 96823-PA-1).

Image 1.1: LSE Lighting UV Bulb, compatible with Jebao 75W Clarifier STU-75.
2. Safety Information
WARNING: Ultraviolet (UV-C) light is harmful to eyes and skin. Direct exposure can cause severe injury. Always use appropriate safety gear during installation and maintenance. Never look directly at an illuminated UV-C bulb.
- Ensure the UV clarifier unit is completely disconnected from power before attempting any installation, removal, or maintenance.
- Do not operate the UV bulb outside of its protective housing.
- Handle the quartz glass tube with care to avoid breakage. Avoid touching the glass directly with bare hands; use gloves or a clean cloth to prevent oil residue, which can reduce UV output and bulb life.
- Keep out of reach of children.
- Dispose of old UV bulbs according to local regulations for hazardous waste, as they may contain mercury.
3. Installation (Setup)
This section outlines the general procedure for replacing a UV bulb in a compatible clarifier unit. Refer to your specific Jebao 75W Clarifier STU-75 manual for detailed, model-specific instructions.
- Power Disconnection: Crucially, disconnect the power supply to the UV clarifier unit before proceeding.
- Access the Bulb Housing: Carefully open the clarifier unit to access the UV bulb housing. This may involve unscrewing caps or opening latches.
- Remove Old Bulb: Gently pull the old UV bulb straight out from its socket. If the bulb is hot, allow it to cool before handling. Be cautious of any water inside the quartz sleeve.
- Inspect Quartz Sleeve: Examine the quartz sleeve (the glass tube surrounding the bulb) for cracks, damage, or excessive mineral buildup. Clean the quartz sleeve if necessary (see Maintenance section). Replace if damaged.
- Install New Bulb: Holding the new LSE Lighting UV bulb by its ceramic base or ends (using gloves or a clean cloth), align the 4 pins with the corresponding slots in the socket. Gently push the bulb straight into the socket until it is fully seated. Do not force it.
- Secure Housing: Carefully reassemble the clarifier unit, ensuring all seals and caps are properly secured to prevent water leaks.
- Power Connection: Once fully assembled and secured, reconnect the power supply to the UV clarifier.

Image 3.1: Close-up of the UV bulb's 4-pin base for proper alignment during installation.
4. Operation
After proper installation, the LSE Lighting UV bulb will begin emitting UV-C light when the clarifier unit is powered on. The UV-C light targets and neutralizes single-celled algae and harmful microorganisms as water passes through the clarifier, contributing to clearer and healthier water in ponds and aquariums.
- Continuous Operation: For optimal water clarity and sterilization, the UV clarifier is typically designed for continuous operation.
- Indicator Light: Many clarifier units include an indicator light to confirm the UV bulb is functioning. Consult your clarifier's manual to locate this feature.
- Initial Results: Visible improvements in water clarity may take several days to a few weeks, depending on the initial water conditions and the size of the system.

Image 4.1: Illustration of UV lamps used in water applications for clarification.
5. Maintenance
Regular maintenance ensures the longevity and effectiveness of your UV clarifier system.
5.1. Bulb Replacement
- The LSE Lighting UV bulb has an effective life of approximately 10,000 hours. For consistent performance, it is recommended to replace the bulb annually, even if it still appears to be glowing. The UV-C output diminishes over time, reducing its effectiveness.
- Follow the installation steps in Section 3 for safe bulb replacement.
5.2. Quartz Sleeve Cleaning
- The quartz sleeve protects the UV bulb from water and should be cleaned periodically (e.g., every 3-6 months, or during bulb replacement) to remove mineral deposits and algae film. Buildup on the sleeve can block UV light, reducing efficiency.
- Procedure:
- Disconnect power to the clarifier.
- Remove the UV bulb as described in Section 3.
- Carefully remove the quartz sleeve from the clarifier unit.
- Clean the exterior of the quartz sleeve using a soft cloth and a mild acid solution (e.g., white vinegar or a diluted descaling agent). Rinse thoroughly with clean water.
- Inspect the quartz sleeve for any damage before reinstallation.
- Reinstall the clean quartz sleeve, then the new UV bulb, and reassemble the unit.

Image 5.1: Handle the UV bulb carefully, preferably with gloves, to avoid contamination.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| UV bulb not lighting up. |
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| Water remains cloudy despite UV operation. |
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| Water leak from clarifier unit. |
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7. Specifications
| Feature | Detail |
|---|---|
| Brand | LSE Lighting |
| Model Number | LSE-JE75WSTU |
| Compatibility | Jebao 75W Clarifier STU-75 |
| Light Type | UV-C |
| Wattage | 75 Watts |
| Light Source Type | Quartz |
| Base Type | 4-Pin T5F Ceramic Base |
| Length | 33 inches (approximate, based on product description) |
| Average Operating Life | 10,000 Hours |
| Material Type | Glass |
| EPA Registration | EPA Registered Establishment No. 96823-PA-1 |

Image 7.1: The product is manufactured in an EPA Registered Establishment.
8. Warranty and Support
8.1. Warranty Information
This LSE Lighting UV bulb comes with a 1-year manufacturer's warranty. Please retain your proof of purchase for warranty claims. The warranty covers defects in materials and workmanship under normal use. It does not cover damage due to improper installation, misuse, or accidental breakage.
8.2. Customer Support
For technical assistance, warranty inquiries, or further questions regarding your LSE Lighting UV bulb, please contact the manufacturer directly. Refer to the product packaging or the LSE Lighting official website for current contact information.
Important Note: This is a compatible replacement product. LSE Lighting does not sell Jebao brand lamps. All Jebao names, trademarks, and logos are used strictly for compatibility reference.