Two 18w PLL UV bulbs in one delivery. A UV lamp is an annual consumable, not a one-off purchase. Buying two at once means one delivery charge instead of two, and a spare already on the shelf when the water turns.

Dimensions: 215mm overall length · 4 pin fitting

Contains

• 2 x AllPondSolutions 18w PLL UV bulb, 215mm, 4 pin

Cheaper than buying them one at a time, and one delivery instead of two.

Specification

• 18w PLL germicidal UV-C lamp
• 215mm overall length
• 4 pin fitting
• Average lifespan approximately 9,000 hours
• Suitable for pond and aquarium use

Fits our own brand

AllPondSolutions CUV-118, CUV-218 and SSUV-18 sterilisers; PF-20000, PFC-20000 and AUTO-PFC-20000 filters. Also fits all major manufacturers' units - measure your existing bulb end to end and check it against 215mm before ordering.

When to replace it

A UV bulb stops working long before it stops glowing. The visible light remains while the invisible UV-C output fades, so a lamp that still lights up can be doing nothing for your water.

• Sterilisation: replace every 6 months (approximately 4,000 hours)
• Pond or aquarium clarification: replace every 12 months (approximately 8,000 hours)

On a 6 month sterilisation cycle, two lamps is a full year of cover. Clean the quartz sleeve at every change - see our UV Steriliser Maintenance Guide.