---
product_id: 48400559
title: "36w UV Light Steriliser for Pond & Aquarium - CUV-136 Fish Tank & Pond Clarifier - Helps Remove Algae and Greenwater"
brand: "allpondsolutions"
price: "€ 155.25"
currency: EUR
in_stock: true
reviews_count: 13
category: "Allpondsolutions"
url: https://www.desertcart.ie/products/48400559-36w-uv-light-steriliser-for-pond-and-aquarium-cuv-136
store_origin: IE
region: Ireland
---

# 4500 L/H high flow rate 36W powerful UV sterilisation Fits 0.75-1.5 inch pipe adapters 36w UV Light Steriliser for Pond & Aquarium - CUV-136 Fish Tank & Pond Clarifier - Helps Remove Algae and Greenwater

**Brand:** allpondsolutions
**Price:** € 155.25
**Availability:** ✅ In Stock

## Summary

> 💧 Clear water, clear mind – your pond’s new best friend!

## Quick Answers

- **What is this?** 36w UV Light Steriliser for Pond & Aquarium - CUV-136 Fish Tank & Pond Clarifier - Helps Remove Algae and Greenwater by allpondsolutions
- **How much does it cost?** € 155.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/48400559-36w-uv-light-steriliser-for-pond-and-aquarium-cuv-136)

## Best For

- allpondsolutions enthusiasts

## Why This Product

- Trusted allpondsolutions brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Fit Adapters:** Multiple inlet/outlet sizes (19-38mm) for seamless integration with your existing setup.
- • **High Flow Compatibility:** Handles up to 4500 litres/hour, perfect for ponds up to 20,000L.
- • **Powerful 36W UV Steriliser:** Optimized UV intensity to neutralize algae and harmful microorganisms.
- • **Crystal Clear Water, Every Time:** Effectively eliminates green algae for pristine pond & aquarium clarity.
- • **Energy Efficient & Low Maintenance:** Eco-friendly operation with annual bulb replacement for lasting performance.

## Overview

The allpondsolutions 36W UV Light Steriliser (CUV-136) is a high-performance pond and aquarium clarifier designed to remove green algae and greenwater. Suitable for ponds up to 20,000 litres, it delivers a powerful 36-watt UV output with a flow rate of 4500 L/H. Featuring versatile inlet/outlet adapters (0.75 to 1.5 inches), it integrates easily with existing filtration systems. Energy efficient and easy to maintain, this steriliser ensures crystal-clear water by clumping algae for effective filtration, making it a must-have for any serious pond or aquarium enthusiast.

## Description

Free delivery and returns on eligible orders. Buy allpondsolutions 36w UV Light Steriliser for Pond & Aquarium - CUV-136 Fish Tank & Pond Clarifier - Helps Remove Algae and Greenwater at desertcart UK.

Review: very good product and value for money. - very happy with uv light and good value for money, the quick delivery was excellent and working well, many thanks jq.
Review: Really does get rid of green algae - Every year I get a problem with a type of algae that grows over everything and so far can find little that touches it, but I also get a problem with single celled green algae that this year literally turned my koi pond into pea soup. I've tried numerous "chemical/biological" treatments and none have worked, these frequently have had mainly five star reviews saying how they have produced crystal clear water yet plainly these have been fake reviews since I've found just like all those who gave them one star that they were useless. So I started looking at UV as a solution and once again I was faced with numerous 5 star reviews stating how good it was and then one star ones saying how useless it was, although I have to say some of these negative reviews weren't necessarily regarding green algae. I was also rather sceptical since my pond filter has a built in UV lamp and that plainly wasn't sorting the issue. Further research showed that my in built lamp was to sterilise the water leaving the filter so obviously wasn't a green algae solution. I decided I needed an extra inline UV lamp before the filter and picked this one since it was close to my flow rate but allowed some wriggle room to make sure it wasn't trying to work on a wrong flow rate. Now this is where it's going to start sounding like a fake review but literally within 24 it really did look like the water was clearing, not a lot but definitely better. Within days it was obviously working and the water was looking clearer! We are now into the third week since I fitted it and the pond is almost clear of the green algae. Do not buy this for anything other than getting rid of green algae, it only has an impact on algae but unfortunately despite it being advertised as this use and this use only some buyers have bought it for brown or other types of water and then given it negative reviews for not working. I only wish I'd taken a before and after picture but I never imagined it would firstly work this quick or secondly work this well. So to repeat if you have a problem with green algae get one of these (make sure you get one suited to your pump) it really really does work!

## Features

- Suitable for Pond Sizes up to 20,000 Litres. Through Flow sterilisation at 4500 L/H
- Clear Water – Adding a UV Steriliser to your pond or aquarium will help keep your pond or aquarium water looking crystal clear. UV lights need to be used with a pond filter or aquarium filter.
- UV Sterilisers work by clumping the small algae particles together for the filtration system to then catch the algae within the filter helping to keep the water crystal clear.
- UV Lights should have the bulbs changed once a year for pond preferably in the spring and six monthly for aquariums.
- Inlet & Outlet Adapter 0.75, 1, 1.25, 1.5 / 19mm, 25mm, 32mm, 38mm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00CMQYQN2 |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 7,922 in Garden ( See Top 100 in Garden ) 3 in Water Garden & Pond Ultraviolet Sterilisers |
| Colour | Clear |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,944) |
| Date First Available | 3 May 2013 |
| EU Energy Efficiency Label | Energy efficient |
| Item Weight | 3 g |
| Item model number | CUV-136 |
| Luminous Flux | 2000 Lumen |
| Number of Items | 1 |
| Pet Type | Fish |
| Product Dimensions | 21.65 x 9.84 x 0.01 cm; 3 g |
| Quantity | 1 |
| Size | CUV-136 (36W) |
| Special features | Energy Efficient |
| Specific Uses | Aquarium |
| Voltage | 240 Volts |
| Wattage | 36 watts |

## Product Details

- **Base material:** Plastic
- **Bulb base:** GU5.3
- **Finish type:** Painted
- **Item weight:** 3 Grams
- **Product dimensions:** 21.7D x 9.8W x 9.8H centimetres

## Images

![36w UV Light Steriliser for Pond & Aquarium - CUV-136 Fish Tank & Pond Clarifier - Helps Remove Algae and Greenwater - Image 1](https://m.media-amazon.com/images/I/61Tpj-1ca8L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ very good product and value for money.
*by M***L on 15 November 2025*

very happy with uv light and good value for money, the quick delivery was excellent and working well, many thanks jq.

### ⭐⭐⭐⭐⭐ Really does get rid of green algae
*by R***T on 13 June 2024*

Every year I get a problem with a type of algae that grows over everything and so far can find little that touches it, but I also get a problem with single celled green algae that this year literally turned my koi pond into pea soup. I've tried numerous "chemical/biological" treatments and none have worked, these frequently have had mainly five star reviews saying how they have produced crystal clear water yet plainly these have been fake reviews since I've found just like all those who gave them one star that they were useless. So I started looking at UV as a solution and once again I was faced with numerous 5 star reviews stating how good it was and then one star ones saying how useless it was, although I have to say some of these negative reviews weren't necessarily regarding green algae. I was also rather sceptical since my pond filter has a built in UV lamp and that plainly wasn't sorting the issue. Further research showed that my in built lamp was to sterilise the water leaving the filter so obviously wasn't a green algae solution. I decided I needed an extra inline UV lamp before the filter and picked this one since it was close to my flow rate but allowed some wriggle room to make sure it wasn't trying to work on a wrong flow rate. Now this is where it's going to start sounding like a fake review but literally within 24 it really did look like the water was clearing, not a lot but definitely better. Within days it was obviously working and the water was looking clearer! We are now into the third week since I fitted it and the pond is almost clear of the green algae. Do not buy this for anything other than getting rid of green algae, it only has an impact on algae but unfortunately despite it being advertised as this use and this use only some buyers have bought it for brown or other types of water and then given it negative reviews for not working. I only wish I'd taken a before and after picture but I never imagined it would firstly work this quick or secondly work this well. So to repeat if you have a problem with green algae get one of these (make sure you get one suited to your pump) it really really does work!

### ⭐⭐⭐⭐ First impressions - Good.
*by G***N on 14 June 2025*

Read the manual before buying. The Ballast is roughly 1m from the end of the cable, so shortening the cable is not possible. The device draws 29.5W, according to my wattmeter, during testing, and the ballast becomes mildly warm. The unit has its I/O in multiple directions, so do consider where it is to go. The Ballast is also reasonably large. The unit is elementary to put together and didn't leak - good. I will update the review in a week or so and comment on the water clarity. The viewports are useless in a UK summer sun. I will try them again later tonight. The best part by far is the transparent hose tail with the spinning propeller inside, showing water flow. Update 2 weeks later. My small 1000L pond is now crystal clear after being green for years. Fustratingly, I also a month ago improved by mechanical filtering, so this is not a scientific test.

## Frequently Bought Together

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-08*