Your Secret Weapon Against Green Water

Tired of murky, pea-soup pond water ruining your view? Regular replacement of your ultraviolet lamp is the single most effective way to maintain pristine water clarity. While a UV bulb may continue to glow blue after months of use, its active, algae-killing UV-C radiation drops off significantly over time. Upgrading to a fresh Arcadia Ultraclear 24W bulb ensures your system runs at peak sterilization power.

Universal Design with High-Intensity Output

Crafted by industry leaders Arcadia, these compact PL style bulbs are engineered for maximum performance within a space-saving footprint. Thanks to the standardized 2G11 4-pin connection, this bulb is highly cross-compatible, dropping seamlessly into a wide range of leading manufacturer UV-C clarifiers, pond filters, and specialized marine aquarium sterilizers.

Key Features & Benefits

• Eliminates Suspended Algae: Destroys the cellular structure of free-floating green algae, allowing your mechanical filter pads to easily trap and remove it.

• Universal Compatibility: Fits a massive array of brand-name UV clarifiers and aquarium sterilizers utilizing 24W 2G11 lamps.

• 12-Month Peak Efficiency: Specifically manufactured to provide up to a full year (approx. 8,000 hours) of reliable, continuous sterilization.

• Improves Aquatic Health: Helps lower the ambient pathogen load in the water column, supporting healthier fish and clearer environments.

Maintenance & Safety Advice

• When to Replace: For best results, we highly recommend replacing your UV bulb in early spring, right after the last winter frost has cleared. This ensures peak sterilization strength is active before the long, warm, sunny days of summer trigger massive algae blooms.

• ⚠️ SAFETY WARNING: Ultraviolet radiation is dangerous to eyes and skin. Never look directly at an illuminated UV bulb while it is powered outside of its protective, enclosed filter housing. Always disconnect the power supply before handling or changing the lamp.

Specifications

• Brand: Arcadia

• Range: Ultraclear UV

• Wattage: 24W

• Lamp Type: Compact PL (Twin Tube)

• Base Connection: 2G11 (4 Pin)

• Total Length: 12.5 inches / 317 mm