Best Uvc Klärer 2025

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Last Updated - 26.07.2025

Best Choice

01

AquaOne

AquaOne UVC Clarifier CUV 236 I Water Clarifier with 36 Watt UV Lamp I UVC Pond Clarifier I Clear Water in the Pond I Algae Killer for Garden Pond Pool Aquarium

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9.6

Exceptional

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OUTDOOR LIFE
AquaOne UVC clarifier CUV 236, water clarifier with 36 watt UV lamp, UVC pond clarifier, clear water in the pond, algae killer for garden pond, pool, aquarium
AquaOne

89,98 €
02

SunSun

SunSun CUV-136 Pond Clarifier 4500 l/h / 36 W UVC Clarifier for Pond Filter & Pond Pump Water Clarifier with UV Lamp Light Filter for Algae Control

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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[Effective Algae Control] - Reduces algae growth and effectively prevents the formation of bacteria and mould in pond water, improving water quality and ecosystem.
[Easy Integration] - Thanks to universal connections, effortless installation into any existing pond system is possible without additional complications or changes to the existing setup.
Reliable performance: ensures quick and efficient clarification of pond water to ensure clear vision and healthy water inhabitants.
Healthy pond environment: promotes a balanced ecological balance, which has a positive effect on the living conditions of fish, plants and other aquatic life.
Durable quality: high-quality materials and careful workmanship guarantee long-term and reliable performance, so you will enjoy your UVC pond clarifier for a long time.

66,99 €
Value for Money

03

Ecomax

EcoMax 10000 UVC clarifier, 11W

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40% Off
9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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UV-C light filter 11 W for ponds up to 10,000 litres
Optical function control
Frees the water from algae, discolouration, germs and harmful bacteria
Dimensions: 335 x 230 x 185 mm
Branded UVC bulbs included (thus longer service life)

27,77 € 46,29 €(40% Off off)
04

WAGNER GREEN Alles für den Gartenteich

Wagner Green GUV Pond Clarifier 11 Watt | Water Clarifier without Chemicals | UVC Disinfectant for Clear Water in the Pond | UV-C Algae Killer |

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9.1

Excellent

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Protects pool inhabitants from diseases and does not harm plants or fish
Optimises pond water in terms of germ-free and clarity
Includes light bulb and German Instruction manual
High-quality and durable workmanship
Controls algae, bacteria and mould formation without the use of chemicals
11 Watt UVC clarifier suitable for ponds up to 12,000 litres

54,79 €
05

Coospider

Aquarium U-V Filter Pump for 150-380L Fish Tank, 5W Lamp Anti Algae U-V Clarifier, 1200L/h Crystal Clear Algae Killer Water Pump Air Supply Flow Pump for Cold Water Tropical Fish

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8.8

Very Good

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【1 year after-sale service】We offer you a 4000 hour warranty and friendly customer service. If you are not satisfied with our machine in any way after receiving the aquarium pump, please contact the service mailbox on the package.
Separate switch: control the water pump and the aquarium light separately. If you only want to use the water pump, you can turn off the aquarium light separately.
Easy to check light up: you can easily check whether the light is switched on from the outside of the machine, do not need to disassemble the machine to see it.
Crystal clear: built-in 254 nm wavelength fish tank U-V light. It is used in green water aquariums. Make your aquarium crystal clear. It can reduce the number of tank water changes and you don't have to spend much effort to change the water.
Air supply and fresh smell: Once the aquarium is full of green algae, it is accompanied by the smell. This machine can reduce the smell in the aquarium and generate air bubble to add oxygen to your tank water. Simulation of the natural ecology environment.

39,99 €
06

Gardebruk

Gardebruk® Pond Clarifier 11 Watt 5 m Cable 3 Connection Adapters Garden Pond Aquarium UVC Clarifier Light Filter Water Clarifier Algae Killer Water Conditioner UV

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Reduces the care effort – with the water conditioner, the maintenance effort for the pond and aquarium is considerably easier. The water remains clearer, which means less manual cleaning required.
Improves water quality – Our GARDEBRUK UVC pond clarifier uses UV light to kill harmful bacteria and algae in the water. This improves water quality and promotes the health of fish and plants.
Effective algae control – the water clarifier offers an effective method to combat algae growth in the pond or aquarium. By using UV light, the growth of algae is reduced without the use of harmful chemicals.
Easy and quick installation – thanks to the included connection adapter, the water clarifier can be easily mounted between pump and filter. The UV-C water clarifier is powered by a mains plug - plug in and you're done!
Durability and reliability: the UV aquarium and pond clarifier is very durable and reliable thanks to its robust material. In addition, it improves visibility in the long term and viewing the fish and plants becomes even more enjoyable.

52,95 €
07

VIALIA

VIALIA UVC Clarifier, Model: CUV-111, 11 Watt, 3 Port Pond Clarifier, UV Sight Glass, Pond Filter with Pump for Garden Pond

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Efficiency: With a powerful 11 watt UVC lamp, the water is thoroughly cleaned by UV radiation and remains permanently clean - for healthy fish and a vibrant biotope.
Easy to use: connect the pond pump, check all connections, plug in: the light blue lamp immediately indicates the commissioning. So easy and quick to clear water
Durability: conveniently renew the UVC bulb every 12 months or after 8,000 operating hours. This ensures long-lasting maximum performance and healthy, clear water.
Crystal clear: No more green, cloudy water: the VIALIA CUV-111 UVC clarifier reliably ensures clear pond and aquarium water, free from algae, bacteria and harmful pathogens.
Control: Thanks to the integrated UV viewing glass, you can keep an eye on the function of the device at all times. Convince yourself of the reliable effect of the VIALIA UVC clarifier

49,00 €
08

Forever Speed

Forever Speed 5-in-1 Aquarium Internal Filter with UVC Clarifier 3 Watt, Aquarium Filter Pump Including Adjustable Flow 400L/h for 40-120L Aquariums

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Suitable for fresh and salt water: the aquarium filter must be completely submerged in fresh and salt water. The design of the floor vacuum cleaner filters out impurities more thoroughly, and the slim inlet prevents fish from being sucked in so they are safe.
Low noise and easy to install: the aquarium filter pump is equipped with strong suction cups that can be attached anywhere under the water surface of the aquarium. The pure copper motor is more stable and safer in operation, with low noise level, it is the first choice for aquarium filter pumps at home.
Built-in UV cleaner: the aquarium filter is equipped with a 3W UV cleaner that kills some micro-organisms, slows down the growth of algae and inhibits the growth of viruses to achieve a healthy environment. The pump is with the UV timer you can choose 3 different times: 4 hours, 8 hours and 24 hours, depending on the water quality.
Adjustable flow rate/direction of the water outlet: the maximum flow rate of the built-in filter is 400L/H, and the size of the water outlet can be adjusted as needed, and the direction of the water outlet can be adjusted 180° left and right. The water outlet is equipped with a rain shower and an oxygen nozzle, which is decorative and practical.
5-in-1 multifunctional aquarium filter: the multifunctional aquarium inner filter, which combines circulation filtration, sterilisation, oxygen enrichment, rain shower and wave formation, can be used both as a filter for cleaning impurities in the aquarium and as an aquarium oxygen pump to increase oxygen in the water body and create a healthy environment for fish and aquatic plants.

25,99 €
09

SunSun

SunSun CUP-807 Aquarium Internal Filter 700 l/h 4-in-1 Filter with Pump for Aquarium, UVC Clarifier and Oxygen Hose, with Filter Sponge and Bioballs

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8.4

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

[VERSATILE INTERNAL FILTER] - With 2-stage filtration through filter sponge and bio-quartz balls, the internal filter in the aquarium ensures crystal clear water and optimal biological cleaning.
[UVC Clarifier for Clean Water] - The built-in 7-watt water clarifier eliminates harmful bacteria and algae, ensuring a clear and healthy environment in the aquarium.
[Powerful Aquarium Pump] - Built-in 700L/H pump at only 10W ensures efficient water circulation while saving energy. The outlet nozzle can be swivelled 90°.
[Individually Adjustable Oxygen Supply] - The integrated hose provides the possibility of additional oxygen supply to create optimal conditions for your aquarium inhabitants.
4-in-1 filter for medium aquariums: The SunSun CUP-807 combines internal filter, aquarium pump, UVC clarifier and oxygen hose in one device. Ideal for aquariums up to 500 litres.

32,99 €
10

OMECO

OMECO 5 in 1 8 W UVC Clarifier Aquarium Internal Filter with Timer 800 L/H Adjustable Aquarium Internal Filter with UVC Clarifier Aquarium Pump for Sea Water and Sweet Basin 150-300 L Aquarium Volume

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Quiet and easy to assemble: the aquarium filter pump with suction design can be mounted directly on the wall of the aquarium. UVC clarifier aquarium indoor air pump quiet, more stable engine running, suitable for fresh and sea water. 800L/H pump head can reach 0.8m. If you encounter product problems, please contact us in time. Our professional customer service will help you solve your problem quickly.
Medium aquarium tank: aquarium pump with filter through the oxygen injector additional oxygen, suitable for small and medium pools with water volume up to 175L-300L, aquarium filter pump is not suitable for large volume ponds. The maximum power of the water pump is 8 W, which saves energy and reduces emissions.
8 W UVC clarifier aquarium: UV filter aquarium inside by placing UVC clarifier pumps, some microorganisms are killed, the growth of algae and moss slows, the growth of viruses inhibited and achieves a healthy environment that corresponds to the growth of fish. UVC clear aquarium inner filter for aquariums allows you to control the UV lamps with a separate on/off switch. and you can choose whether and you you should run 4, 8 or 24 hours a day.
5-in-1 aquarium pump: the built-in filter pump in the aquarium filter continuously water for sterilisation, filtration, water pump, oxygen, timer increase. The aquarium filter pump is a filter sponge and precipitation spraying, effective filtering of harmful substances in the water, which simulates the effect of a waterfall and creates a good and healthy environment for fish.
180 Rotatable Filter Outlet: aquarium pump outlet adopts 180° rotating design to control the flow rate of the spray rod and outlet, as well as an oxygen injector that provides the aquarium with extra oxygen, creating a healthy environment for fish and aquatic plants

45,99 €