Free UK Delivery on All Orders | 2-Year Warranty
A compact inline 9W UV clarifier positioned on a stone surface beside a clear pond, surrounded by lush greenery and lily pads.

The Ultimate UV Pond Clarifier for Crystal Clear Water

Eliminate green water and suspended algae effortlessly with our dual-use 9W inline UV steriliser for ponds and aquariums.

4.8 / 5.0
4,550+

Happy Customers

4.8★

Avg Rating (455+ reviews)

93%

Satisfaction Rate

🇬🇧

Loved Across Britain

UVPond

UVPond
4.8 (455 reviews)
£48.99RRP £57.5915% OFF

£48.99 inc. VAT (£40.83 ex. VAT)

Only 33 left — 32 ordered this week

A compact, dual-use 9W inline UV clarifier designed to rapidly eliminate green water and suspended algae in both garden ponds and home aquariums.

Free UK Delivery

Next-day dispatch from our UK warehouse

2-Year UK Warranty

Full manufacturer warranty with UK support

Dual-Use Design

Perfect for both garden ponds and indoor aquariums

Universal Fit

Includes stepped hosetails for easy integration

Trusted by British Fish Keepers

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What Our Customers Say

Verified Purchase

I bought this to use as an aquarium uv steriliser for my 300L planted tank. It cleared up a persistent green water bloom in just 4 days. Very impressed with the build quality.

Sarah Mitchell, London
Verified Purchase

Next day delivery was spot on. Fitted this inline pond uv clarifier to my 3000L goldfish pond easily using the supplied stepped tails. Water is crystal clear again.

James Henderson, Manchester
Verified Purchase

As an aquatic biologist, I appreciate a well-designed UV unit. The quartz sleeve is high quality, and the 9W output is perfectly calibrated for smaller setups. Excellent piece of kit.

Dr. Emily Clarke, Edinburgh
Verified Purchase

Great little 9w uv steriliser that does exactly what it says on the tin. My only minor gripe is that a 7m cable would have been slightly better for my specific garden layout, but 5m is standard.

Oliver Wright, Bristol
Verified Purchase

Much better value than the Hozelock or Pontec equivalents I was looking at. It feels sturdy, was easy to install, and cleared my green water pond issue in under a week.

Rebecca Thompson, Leeds
Verified Purchase

Using it as an external aquarium uv steriliser. It is slightly bulky inside my aquarium cabinet, but it works flawlessly and the stepped hosetails made plumbing it into my canister filter a breeze.

David Patel, Birmingham

Installation Guide

How to use
  1. Ensure your water pump is switched off and disconnected from the mains.
  2. Measure your existing hosing and cut the stepped hosetails to the appropriate diameter (12mm, 16mm, 20mm, or 25mm) to avoid flow restriction.
  3. Connect the hose from your pump to the inlet of the UV clarifier, and run a second hose from the outlet to your filter or waterfall.
  4. Secure all hose connections tightly using stainless steel jubilee clips.
  5. Plug in the UV clarifier, then turn on your water pump. Check for any leaks before leaving the system to run continuously.

At UVPond, we understand the frustration of battling persistent green water and suspended algae. Founded by British aquatic enthusiasts, our mission is to provide a simple, effective solution that doesn't require you to replace your entire filtration setup. We focus purely on what works: high-quality, reliable UV-C technology that integrates seamlessly with your existing equipment.

Unlike legacy brands that often push you towards buying complete, expensive filter bundles, we champion the standalone inline UV clarifier. Whether you are managing a 4,000-litre garden koi pond or a 400-litre indoor planted aquarium, our dual-use units are designed to deliver crystal-clear results.

We pride ourselves on offering value-led performance without compromising on safety or durability. Every UVPond unit comes with UKCA and CE certifications, IP-rated outdoor suitability, and straightforward installation guides. It's time to stop worrying about murky water and get back to enjoying your fish.

Why UK Customers Love Us

Our products are designed and supported in the UK, ensuring superior quality and fast tracked delivery from our British warehouse. We offer free UK delivery on all orders, eco-friendly packaging to reduce carbon footprint, and warm, direct customer service. Every order is backed by a generous 30-day returns policy under the UK Consumer Rights Act 2015 — you are always protected.

Frequently Asked Questions

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