AllPondSolutions Replacement 55w PLL UV Bulb / 4 Pin Lamp

Model: UV-BULB-55W

£18.99 Free UK delivery

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£18.99

About the Replacement 55w PLL UV Bulb / 4 Pin Lamp

Dimensions: 535mm overall length · 4 pin fitting

Our 55w PLL UV bulb is a direct replacement lamp for pond and aquarium UV sterilisers, clarifiers and UV-equipped filters. It fits all major manufacturers' units - measure your existing bulb end to end and check it against the figure above before ordering.

Specification

  • 55w PLL germicidal UV-C lamp
  • 535mm overall length
  • 4 pin fitting
  • Average lifespan approximately 9,000 hours
  • Suitable for pond and aquarium use

Fits our own brand

AllPondSolutions CUV-155 and SSUV-55 sterilisers, and the SSUV-110 which takes two; PFC-25000, PFC-30000 and PFC-50000 filters; AUTO-PFC-30000, AUTO-PFC-50000 and AUTO-PFC-75000; PRO-30000, PRO-50000 and PRO-75000.

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)

Clean the quartz sleeve whenever you change the lamp - limescale and biofilm on the sleeve block UV-C just as effectively as a dead bulb does. See our UV Steriliser Maintenance Guide.

Easy to install. The lamp pushes into its holder and the quartz sleeve reassembles as it came apart. Always isolate the power supply before opening a UV unit.

Delivery & returns
Tracked 2–3 daysFREE
Tracked 1–2 days£4.00
Courier next day£6.00
30-day returnsEasy online returns

Order before 3pm Monday–Friday for same-day despatch. Pallet items: UK mainland 3–5 days FREE, kerbside delivery. Full delivery & returns policy

Frequently asked questions

Which AllPondSolutions units does this 55w bulb fit?

It fits the CUV-155 and the SSUV-55 and SSUV-110 (x2) steriliser range, plus the PFC-25000/30000/50000, AUTO-PFC-30000/50000/75000 and PRO-30000/50000/75000 filters.

Will it fit other brands of UV unit?

It's suitable for most popular quality manufacturers' products, but bulbs vary — please check the length and pin type of your existing bulb against this 55w PLL 4-pin lamp before ordering.

What type of bulb and fitting is this?

It's a 55w PLL lamp with a 4-pin base.

How often should I replace the UV bulb?

We recommend replacing it around every 12 months, as UV output fades over time even while the bulb still lights up.

My water has gone green but the bulb still lights – why?

A lit bulb isn't proof of UV output; germicidal strength drops before the lamp stops glowing, so returning green water after about a year usually means a new bulb is due.

Is this bulb suitable for both ponds and aquariums?

Yes — it's used across both pond and aquarium equipment in the compatible range listed above.

Specifications & downloads

Model: UV-BULB-55W

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