Eheim GlowUVC-18 Replacement UV-C Lamp 18W for clearUVC-18 (4102510)

The Eheim GlowUVC-18 (4102510) is a genuine OEM replacement UV-C lamp designed specifically for the Eheim clearUVC-18 garden pond UV clarifier. At 18 watts, this lamp delivers the correct UV-C output required to eliminate green water-causing algae spores, pathogenic bacteria, and harmful microorganisms in medium ponds up to 18,000 litres without fish or 9,000 litres with fish.

UV-C lamp output degrades significantly over time even when the lamp remains visibly lit — Eheim recommends replacing the GlowUVC-18 annually, ideally at the start of each pond season, to maintain peak germicidal performance and keep pond water clear and healthy year-round.

Important safety note: UV-C radiation is hazardous to eyes and skin even at low doses. Always handle UV-C lamps with gloves and never operate outside the sealed device.

Key Features

• Genuine Eheim replacement lamp: Exact OEM fit for the Eheim clearUVC-18 — correct wattage and socket for full germicidal output
• 18W UV-C output: Delivers the required UV-C dose to eliminate green water, floating algae spores, and pathogenic bacteria in ponds up to 18,000 litres
• 2G11 socket: Standard 2G11 fitting — also compatible with other UV sterilisers using the same 18W 2G11 socket type
• Service life: 8,000 hours: High-quality UV-C lamp with a long rated service life — replace after 8,000 hours or annually, whichever comes first
• Replace annually: UV-C lamp output degrades over time — replace every 12 months at the start of each pond season for consistent performance
• Gloves recommended: Always use gloves when handling the quartz lamp — skin oils on the glass surface reduce UV-C transmission and shorten lamp life
• Genuine Eheim quality: Manufactured to Eheim's standards for reliable, consistent UV-C output throughout its service life

Compatibility

• Compatible with: Eheim clearUVC-18 pond UV clarifier
• Also compatible with: Other UV sterilisers using an 18W 2G11 socket
• Socket type: 2G11
• Application: Medium garden pond UV clarification

Product Details

• Brand: Eheim
• Product Code: 4102510
• Type: Replacement UV-C Lamp
• Wattage: 18W
• Socket: 2G11
• Service Life: 8,000 hours
• Replacement interval: Annually recommended
• Compatibility: Eheim clearUVC-18

This replacement lamp is suitable for any pond keeper running an Eheim clearUVC-18 UV clarifier who needs to restore full UV-C germicidal output and maintain clear, healthy water in a medium garden pond throughout the season.