Aqua UV 40W Replacement Lamp — 33.5-inch Mercury Quartz UV Clarifier Bulb, Direct-Fit

The Aqua UV 40 Watt Replacement Lamp is a 33.5-inch mercury quartz tube designed to restore optimal UV output in compatible UV clarifiers.

When a UV clarifier's germicidal lamp dims or fails, water clarity and system performance can decline. This replacement lamp fits systems and fixtures specified for a 40 watt, 33.5-inch mercury quartz bulb, offering reliable optical output when installed correctly. It’s built to the original form factor to ensure straightforward swapping with like-for-like units.

How will this lamp fit my existing UV clarifier?

The Aqua UV lamp is a direct-form 33.5-inch, 40 watt mercury quartz tube intended for systems that accept that length and wattage. Check your clarifier’s manual or existing lamp markings to confirm compatibility before purchase. Proper fit prevents light leakage and maintains the intended fluid path through the sleeve.

• Length: 33.5 inches (overall tube size)
• Power: 40 watts mercury-based UV quartz
• Form-factor matches standard 33.5" UV fixtures
• Designed for direct replacement without rewiring

What performance can I expect after replacing the lamp?

Replacing an aged lamp restores the original UV intensity, improving the system’s ability to emit the designed UV wavelengths. Performance depends on correct installation, a clean quartz sleeve, and a matching ballast. A new lamp is most effective alongside routine maintenance of the clarifier housing and sleeve.

• Restores near-original UV output when paired with functioning ballast
• Optimal when quartz sleeve is cleaned or replaced
• Immediate improvement in emitted UV intensity after installation
• Best results when installed at recommended service intervals

How do I replace the lamp safely and maintain longevity?

Always disconnect power before handling the lamp and allow the unit to cool. Handle the quartz tube by the ceramic ends or with clean gloves to avoid oils on the glass; contamination can reduce lamp life. After installing, verify ballast compatibility and proper electrical connections to avoid under- or over-driving the lamp.

• Power down and cool the unit before removing the old lamp
• Wear gloves and avoid touching the quartz surface
• Inspect and clean or replace the quartz sleeve for best output
• Confirm ballast matches 40W lamp specifications

When should I plan to replace the UV lamp?

Manufacturers typically recommend replacing mercury UV lamps on a yearly schedule or after a specified operating-hours threshold because UV output declines even when the lamp still emits visible light. Track cumulative run time and replace proactively to maintain consistent performance. Seasonal or continuous-use systems may require stricter replacement intervals.

• Replace after manufacturer-specified operating hours (commonly ~9,000–12,000 hours)
• Consider annual replacement for continuous-use systems
• Replace sooner if visible dimming or ballast issues appear
• Pair replacement with sleeve inspection and cleaning

Who is this replacement lamp for? Install the Aqua UV 40W replacement lamp if you operate a UV clarifier that specifies a 33.5-inch, 40 watt mercury quartz tube and you need a like-for-like lamp swap to restore UV intensity. It’s intended for aquaculture, pond, aquarium, or water treatment setups where the correct lamp length and wattage are critical. If you’re unsure about compatibility, check your clarifier’s owner manual or the markings on your current lamp before ordering.