Name: AllPondSolutions Replacement 55w PLL UV Bulb / 4 Pin Lamp - Pond / Aquarium Fish Tank
Brand: AllPondSolutions
SKU: UV-BULB-55W
Price: 18.99 GBP
Availability: InStock

AllPondSolutions 55W PLL 4-pin UV replacement bulb for pond and aquarium sterilisers

Price

Model: UV-BULB-55W

Free UK delivery - Online Tracking

30 Day easy returns

Same day despatch before 3pm *

In stock, ready to ship
Inventory on the way

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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.

UK Delivery - Non-pallet items

Orders are dispatched Monday - Friday.

Our Next Day last dispatch times for Monday to Friday are 3pm.

We offer a tracked 24 & 48 service using Royal Mail and Amazon Shipping for orders.

Tracked 2-3 Days - FREE
Tracked 1-2 Days - £4.00
Courier Next Day - £6.00

UK Delivery - Pallet items

UK Mainland Pallet Service 3-5 days - FREE
Extended Areas Zone 1 (4-7 days) - £80.00
Extended Areas Zone 2 (4-7 days) - £130.00

Important
Pallet delivery is to the kerbside (at least 2 people will be needed to off-load depending on item size.)

The couriers WILL NOT be able to assist you with moving the aquarium/terrarium or chiller onto the premises. This is due to insurance purposes.

Express next day service orders must be placed before 3pm to ensure they are dispatched that day.

Deliveries will take place between 08:00-19:00 Monday to Friday. Delivery outside of these hours may be subject to an additional fee and local depot availability.

Visit our Delivery Information page for full details.

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.