---
product_id: 48918509
title: "AllPondSolutions 18w UV Light Steriliser for Pond & Aquarium - CUV-118 Fish Tank & Pond Clarifier - Helps Remove Algae and Greenwater"
brand: "allpondsolutions"
price: "27134 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "Allpondsolutions"
url: https://www.desertcart.is/products/48918509-allpondsolutions-18w-uv-light-steriliser-for-pond-and-aquarium-cuv
store_origin: IS
region: Iceland
---

# 2500 L/H Flow Rate 18W UV Power Fits 0.75-1.5 inch Pipes AllPondSolutions 18w UV Light Steriliser for Pond & Aquarium - CUV-118 Fish Tank & Pond Clarifier - Helps Remove Algae and Greenwater

**Brand:** allpondsolutions
**Price:** 27134 kr
**Availability:** ✅ In Stock

## Summary

> 💧 Clear Water, Clear Mind — Beat Algae Before It Beats You!

## Quick Answers

- **What is this?** AllPondSolutions 18w UV Light Steriliser for Pond & Aquarium - CUV-118 Fish Tank & Pond Clarifier - Helps Remove Algae and Greenwater by allpondsolutions
- **How much does it cost?** 27134 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/48918509-allpondsolutions-18w-uv-light-steriliser-for-pond-and-aquarium-cuv)

## 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

- • **Year-Round Algae Defense:** Recommended annual bulb replacement keeps your water crystal clear season after season.
- • **Crystal Clear Water, Every Time:** Powerful 18W UV steriliser targets green algae for pristine pond & aquarium clarity.
- • **Universal Fit, Effortless Setup:** Multiple inlet/outlet adapters (0.75-1.5 inch) for seamless integration with your existing pond or aquarium setup.
- • **Optimized Flow for Maximum Impact:** Handles up to 2500 liters/hour ensuring thorough sterilisation without slowing your system.
- • **Trusted by Thousands of Pond Pros:** 4.4-star rating from nearly 2,000 users proves it’s the go-to solution for greenwater problems.

## Overview

The AllPondSolutions 18W UV Light Steriliser is engineered for ponds and aquariums up to 12,000 liters, delivering a 2500 L/H flow rate to effectively eliminate green algae. Featuring versatile inlet/outlet adapters for easy installation, this UV clarifier works inline with your filtration system to clump algae particles for superior filtration. With a strong user base and proven results, it’s the essential upgrade for anyone serious about crystal-clear aquatic environments.

## Description

Free delivery and returns on eligible orders. Buy AllPondSolutions 18w UV Light Steriliser for Pond & Aquarium - CUV-118 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 12,000 Litres. Through Flow Sterilisation at 2500 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 | B00CMQXJ6C |
| Best Sellers Rank | 13,296 in Garden ( See Top 100 in Garden ) 5 in Water Garden & Pond Ultraviolet Sterilisers |
| Brand | allpondsolutions |
| Brand Name | allpondsolutions |
| Customer Reviews | 4.4 out of 5 stars 1,937 Reviews |
| Global Trade Identification Number | 05060214408370 |
| Item Form | Solid |
| Item Weight | 1 Kilograms |
| Item form | Solid |
| Item height | 0.01 centimetres |
| Item weight | 1 Kilograms |
| Liquid Volume | 12000 Litres |
| Liquid volume | 12000 Litres |
| Manufacturer | All Pond Solutions |
| Target Species | Fish |

## Product Details

- **Brand:** allpondsolutions
- **Liquid volume:** 12000 Litres
- **Item weight:** 1 Kilograms
- **Item form:** Solid
- **Manufacturer:** All Pond Solutions

## Images

![AllPondSolutions 18w UV Light Steriliser for Pond & Aquarium - CUV-118 Fish Tank & Pond Clarifier - Helps Remove Algae and Greenwater - Image 1](https://m.media-amazon.com/images/I/61fXZlDw7cL.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.

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-18*