PLL Lamps

Restore crystal-clear water clarity and eliminate stubborn green water algae with our range of high-output PL-L lamps, replacement 4-pin UV-C bulbs, and 2G11 twin-tube clarifier tubes. Engineered specifically for high-performance pond ultraviolet clarifiers, multi-chamber setups, and pressurised filter units, PL-L lamps deliver concentrated germicidal power in a compact form factor to clump suspended single-celled algae and suppress waterborne pathogens effectively.

Featuring the industry-standard 2G11 base with four straight contact pins in a row, our replacement PL-L lamps provide a secure push-fit connection for units powered by modern electronic ballasts. Crafted with high-transmittance quartz glass, these twin parallel tubes allow maximum penetration of 254-nanometre ultraviolet-C radiation directly into circulating pond water. Because the effective germicidal output of UV lamps naturally drops after six to twelve months of continuous use (even while the lamp still appears to glow blue), installing a fresh PL-L bulb at the start of spring ensures peak algae-clearing performance during the sunniest months. Our collection includes all popular pond wattages, including 18W, 24W, 36W, and 55W models, making it straightforward to find an exact direct replacement for your system.