---
product_id: 49066396
title: "CUV-211"
brand: "allpondsolutions"
price: "₩225944"
currency: KRW
in_stock: null
reviews_count: 12
category: "Allpondsolutions"
url: https://www.desertcart.kr/products/49066396-cuv-211
store_origin: KR
region: South Korea
---

# Max flow rate 5000L/H, optimal 1700L/H Up to 7,000L pond capacity 11W powerful UV sterilization CUV-211

**Brand:** allpondsolutions
**Price:** ₩225944
**Availability:** ❌ Out of Stock

## Summary

> 💧 Clear water, clear mind — own the pond glow-up!

## Quick Answers

- **What is this?** CUV-211 by allpondsolutions
- **How much does it cost?** ₩225944 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/49066396-cuv-211)

## 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

- • **Trusted by Thousands:** 4.4-star rating from nearly 2,000 users proves this is the go-to solution for greenwater clarity.
- • **Precision Flow Design:** Helix turbulence ensures maximum UV exposure at an ideal 1700L/H flow rate for unbeatable sterilization.
- • **Low Maintenance, High Impact:** Annual bulb replacement keeps your system running at peak algae-fighting power without hassle.
- • **Versatile Hose Compatibility:** Fits multiple inlet/outlet sizes (19-38mm) for seamless integration with your existing pond or aquarium setup.
- • **Crystal Clear Water, Every Time:** Effectively clumps algae for superior filtration and visibly clearer ponds and aquariums.

## Overview

The allpondsolutions 11W UV Light Steriliser is engineered for ponds up to 7,000 litres, delivering powerful algae control through a helix design that maximizes UV exposure at an optimal flow rate of 1700L/H. Compatible with multiple hose sizes, it integrates effortlessly with your filtration system to keep water crystal clear. Trusted by thousands with a 4.4-star rating, this steriliser is the essential upgrade for any pond or aquarium owner battling greenwater algae.

## Description

This 11W UV sterilizer clumps algae particles for filtration, keeping water crystal clear. Its helix design turbulates water for efficient sterilization.

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 7,000 Litres. Maximum Flow Rate 5000L/H - Through Flow sterilisation at 1700 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 and Outlet Adapter Hosetails: 0.75, 1, 1.25, 1.5 / 19mm, 25mm, 32mm, 38mm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002NLKA8G |
| Batteries Included | No |
| Batteries required | No |
| Colour | Orange, Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,937) |
| Date First Available | 1 Sept. 2009 |
| Item Form | Solid |
| Item Weight | 1 kg |
| Item model number | CUV-211 |
| Number of Items | 1 |
| Pet Type | Fish |
| Product Dimensions | 32.2 x 14.5 x 7.7 cm; 1 kg |
| Quantity | 1 |
| Size | 1 Count (Pack of 1) |
| Wattage | 11 watts |

## Images

![CUV-211 - Image 1](https://m.media-amazon.com/images/I/71CLPeEyaUL.jpg)

## Questions & Answers

**Q: Will this be able to be fitted with the EF2000+ external filter with supplementary 2.3 L canister? (in terms of tubing fitting?**
A: I'm unsure regarding size fitting but what I can say is this is the best uv filter I have had, I would just get it and try it out. Very easy to assemble . Good luck

**Q: Will this qork on a fluval 307**
A: Assuming Fluval 307 is your filter it should work if you you fit it in the pipe to the input side between the pump and the filter. Mine is fitted there feeding to a home built lave rock filter and it works really well. Pond is 4500litres if that helps.

**Q: Where can i get spare bulbs for CUV-211?**
A: At most aquatic shops.  standard type bulbs.

**Q: Hi, what size is the thread on the unit which the hose tail attaches to?**
A: No idea of the thread size on the unit which holds the "tail", I don't need to know. The hose tail is cot to suit hose diameter, the hose is pushed on and held with a jubilee clip. ( Warm the hose end in hot water, to make it more pliable to push on. It will also shrink back slightly to grip the hose tail).

## 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

- allpondsolutions 11w UV Light Steriliser for Pond & Aquarium - CUV-211 Fish Tank Pond Clarifier - Helps Remove Algae and Greenwater
- Pisces Twin Pack 11w (watt) PLS Replacement UV Bulb Lamp for Pond Filter UVC

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-01*