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Swimming Pool Lights and accessories

Qty : 
Underwater Light Show
£23.00
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Certikin PU2 Mini LED Lights
£270.00
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Certikin PU9 LT White LED Underwater Lights
£320.00
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Sylvania Colour Change LED Lights
£330.00
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Deck Box PU10N
£28.00
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Qty : 
Certikin PU11H Transformer
£355.00
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Qty : 
Certikin PU11S Transformer
£410.00
MORE INFO

Underwater Pool Lights: Lighting & Accessories

Illuminate your swim with PoolStore’s range of high-performance underwater lighting systems. Whether you are looking for traditional high-voltage setups or modern, energy-efficient low-voltage solutions, we provide options for every indoor and outdoor inground pool.


Choosing Your Swimming Pool Lighting

There are two primary technologies used for underwater pool illumination. Selecting the right one depends on whether you are building a new pool or maintaining an existing one.


1. Traditional 300W 12V Sealed Beam Lights

The industry standard for decades, 300W 12V Sealed Beam Underwater Lighting is a reliable and cost-effective choice for traditional pools. In the UK, these are predominantly manufactured by Certikin and are compatible with both concrete and liner pool constructions.


The latest and most economical system is LED underwater Swimming Pool Lighting. With certain ranges offering an incredible average life of 100,000 hours (30 years of a medium use of 8 hours a day), various colour changing options and in most cases little installation it is well worth upgrading. For example if you currently have a PU9 Certikin 300W light and you want to switch over to an LED system all you have to change is the Light Bulb and Guts. They utilise the same niche, deck box and even the same transformer. This can offer you a relatively cost effective install that will offer a pay back within just a few years.


Why choose Sealed Beam lighting?


  • Affordability: Low initial purchase price.
  • Ease of Maintenance: Designed for simple bulb replacement.
  • Versatility: Suitable for side-wall or end-wall installation.

2. LED Pool Lighting: The Modern Standard

The most economical and visually stunning choice is LED Underwater Swimming Pool Lighting. If you are looking for longevity and customisation, LED is the superior investment.


  • Incredible Longevity: Some ranges offer an average life of 100,000 hours—that’s roughly 30 years of use at 8 hours per day.
  • Color Options: Choose from static colors or dynamic color-changing sequences to set the mood.
  • Energy Savings: LED systems use a fraction of the power required by traditional bulbs, often paying for themselves in energy savings within just a few years.

How to Upgrade: Retrofitting LED into Existing Systems

If you currently have a 300W lighting system (such as the popular Certikin PU9), you don't need a complete overhaul to go green.

You can switch to LED by simply replacing the Light Bulb and Guts. These retrofit units utilise your existing:


  1. Niche (the housing in the wall)
  2. Deck Box
  3. Transformer

This "plug-and-play" upgrade is the most cost-effective way to modernise your pool with minimal installation effort.


Quick Comparison: Sealed Beam vs. LED

Feature 300W Sealed Beam LED Lighting
Upfront Cost Low Medium/High
Lifespan ~1,000 Hours Up to 100,000 Hours
Energy Usage High (300W) Low (approx. 30W–50W)
Color Options Single (Warm White) Multiple/Color-Changing
Maintenance Frequent bulb changes Virtually maintenance-free