AllPondSolutions Replacement 36w PLL UV Bulb / 4 Pin Lamp

Model: UV-BULB-36W

£14.99 Free UK delivery

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About the Replacement 36w PLL UV Bulb / 4 Pin Lamp

Dimensions: 410mm (16") overall length · 4 pin fitting

Our 36w 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

  • 36w PLL germicidal UV-C lamp
  • 410mm (16") overall length
  • 4 pin fitting
  • Average lifespan approximately 9,000 hours
  • Suitable for pond and aquarium use

Fits our own brand

This is the 36w lamp for every AllPondSolutions 36w unit: CUV-136, CUV-172, CUV-236 and CUV-272 sterilisers; SSUV-36 stainless steel steriliser; PFC-25000 and AUTO-PFC-25000 filters.

Four pins, not two. We also list a 36w PLS lamp with a 2 pin base. It does not fit any AllPondSolutions unit. Count the pins on your existing bulb - if there are four, this is the correct lamp.

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 36w bulb fit?

It fits the CUV-136, CUV-172, CUV-236 and CUV-272 sterilisers, and the PFC-25000 and AUTO-PFC-25000 filters.

What are the bulb's dimensions and fitting?

It's a 36w PLL 4-pin lamp measuring 410mm (16") in length.

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 before ordering.

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 doesn't guarantee UV output; germicidal strength fades before the lamp stops glowing, so returning green water after roughly a year usually means a new bulb is due.

Is this bulb suitable for both ponds and aquariums?

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

Specifications & downloads

Model: UV-BULB-36W

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