Glostars 18W 2G11-4Pin UV Light Bulb — Replacement UV Bulb for Pond, Aquarium & Water Sterilisation Equipment（18W 1PACK）

• High-Efficiency Sterilization:This 18W UV bulb emits powerful 253.7nm UVC light with over 90% transmittance through high-purity quartz glass. Its cold cathode and long-life filament design ensure stable output, effectively eliminating bacteria, viruses, and algae in pond and aquarium water to restore crystal-clear water quality.
• Reliable quality, adaptable to diverse environments:Our entire UV light bulb range is CE certified and RoHS compliant. Built with mercury alloy technology, it operates stably from -10°C to 80°C, making it suitable for seasonal changes and varying climates with outstanding durability.
• Compatible Specifications for Easy Replacement:This 18W single-tube UV lamp (PLS type) features a 2G11-4pin base, measuring 217mm in tube length, 224mm overall length, and 12mm diameter. Compatible with most UV sterilization systems on the market, it serves as an ideal replacement for original manufacturer lamps of the same specifications.
• Plug-and-Play, Stable Performance:Features a plug-in design for easy installation. Incorporates an anti-interference capacitor and supports 220-240V wide voltage input, ensuring stable light output and effectively extending lamp life.
• Important Safety Usage Instructions:Before Installation: Verify your fixture specifications (power/dimensions/lamp base type) fully match this product's parameters. During Use: Never look directly at the lit lamp. Avoid direct UV exposure to skin, plants, and animals. For optimal sterilization, replace the lamp every 12 months.

This series of high-performance UV germicidal lamps is specifically designed for water purification. Featuring high-purity quartz glass tubes and cold cathode long-life technology, they efficiently transmit and stably emit 253.7nm germicidal ultraviolet light. These lamps professionally eliminate bacteria, viruses, and algae in water, ensuring clear and healthy water quality.