Description
Restore Water Clarity in Aquariums & Ponds
Keep your aquatic display looking crystal clear year-round. The CNZ 18-Watt 2G11 UV Replacement Bulb 2-Pack is designed to replace aged or burned-out ultraviolet lamps in outdoor pond clarifiers and aquarium canister filters. Emitting a consistent 254nm light wavelength, these lamps physically break down floating organic green water particles that cause unsightly cloudiness.
High-Purity Quartz Glass & Simple Plug-In Fit
Constructed with high-transmittance quartz glass, each bulb delivers maximum light output while maintaining continuous-duty thermal stability. The standard 2G11 4-pin base slides smoothly into matching clarifier sockets for quick, tool-free replacement during seasonal filter maintenance.
- Brand: CNZ; EPA Est. No. 96959-CA-1; Power: 18-watt 110-240v
- VALUE 2-PACK REPLACEMENT BULBS: Includes two 18-Watt 2G11 4-pin twin-tube replacement bulbs, ensuring you have an extra backup lamp ready for routine annual aquatic filter maintenance.
- STANDARD 2G11 4-PIN BASE: Features a standard 2G11 4-pin inline base with twin parallel glass tubes for quick, push-in installation into compatible UV clarifier housings.
- 254nm UV-C LIGHT WAVELENGTH: Emits a targeted 254nm ultraviolet wavelength to clear green water algae blooms and eliminate floating organic haze for crystal-clear aquarium and pond water.
- LONG-LASTING 8,000-HOUR SERVICE LIFE: Engineered with high-purity quartz glass to maintain consistent light output for up to 8,000 hours of continuous underwater clarifier operation.
- UNIVERSAL CLARIFIER COMPATIBILITY: Fits a wide variety of 18W aquarium canister filters, submerged pond UV clarifiers, and water garden filter units requiring a 2G11 4-pin twin bulb.



