Christmas SaleToday's sale ends

Best Uv Klärer Test - Holiday Sale

Advertising Disclosure

Last Updated - 15.12.2025

Best Choice

01

JBL

JBL PROCRISTAL UV-C Compact Plus Water Clarifier 18 W 5 m Cable

Show more
9.9

Exceptional

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.

Show more
Main highlights

TÃœV tested, safety switch for automatic shut-off of the UV-C burner when the device is opened, stable, UV-resistant housing, 2-glass design
Space-saving installation by connecting to external filter or separate pump, inlet outlet opening practically attached, shortest installation length: 42 cm
Reduces the risk of infection by germicidal UV-C radiation, no change in water values, no effect on cleaning bacteria in the filter
Compact UV-C water clarifier with 18 W, quick and efficient removal of greenish and white turbidity in fresh and saltwater aquariums as well as garden ponds
Box contents: 1x JBL PROCRISTAL UV-C Compact Plus, water clarifier, cable length: 5 m, UV-C burner power: 18 W, base: 2G11, incl. wall bracket, V2A screws, hose connection sleeves for 12 - 40 mm hoses, 6047200

126,05 €
Value for Money

02

Fluval

Fluval 3W CCFL UVC Clarifier

Show more
9.8

Exceptional

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.

Show more
Main highlights

The CCFL (Cold Cathode Fluorescent Light) technology runs at a cooler operating temperature than conventional UVC lamps and lasts up to 30,000 hours (3 times longer)
Suitable for use in freshwater and saltwater aquariums and even in turtle aquariums where algae are common
Quickly connects to all external filter hoses with an inner diameter of 5/8" (or 16 mm), including all Fluval filters of the 07 and 06 series
Eliminates floating bacteria and algae in the water column that contribute to cloudy or green water and helps prevent the growth of cyanobacteria, which often cause aquatic plants to suffocate and die
A chemical and maintenance free way to purify water

76,39 €
03

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

Show more
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.

Show more
Main highlights

【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 €
04

OMECO

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

Show more
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.

Show more
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

24,78 €
05

FEDOUR

FEDOUR 600LPH Aquarium Filter U-V with Timer, 8W Adjustable Aquarium Filter Pump, Underwater Internal Filter for 30-180L Basins, with Biochemical Cotton, Activated Carbon Cotton, Ceramic Balls

Show more
9.3

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.

Show more
Main highlights

【Specifications】Powerful aquarium internal filter, power: 8W, max water flow: 600LPH, size: 19*7.3*6.6cm, length of spray bar: 6.2in/16cm, length of power cable: 1.5m. Suitable for 30-180L fish and turtle tank.
With timer: you do not need to constantly turn on the U-V lamp. With this timer, you can choose to turn on the lamp for 6 hours, 9 hours, 12 hours or 24 hours according to your needs, which can be more convenient for you. No matter when and where you are, this timer function saves you trouble.
Unique design: this aquarium inner filter has two types of outlets: spray bar and duckbill outlet, and both can be rotated 360°. There is an adjustable button on the spray bar to adjust the water flow of the filter. In addition, this fish filter features a minimum water level design. And the four suction cups can securely attach the filter to the aquarium without it slipping.
This aquarium filter has an overheating protection function that can effectively prevent the motor from overheating due to internal blockages, avoiding engine damage and ensuring higher reliability. In this case, the operation can be resumed once the blockage on the rotor is removed.
Silent fish tank filter: For this aquarium filter, we have improved the internal structure of the pump to further improve sound insulation. Once you put the filter in the water and turn it on, you can hardly hear the motor, just the sound of the water splashing out. The noise level is <35 dB.
Excellent filtration performance: Built-in U-V, not only cleans the water, but also makes the green water clear. This aquarium filter pump also has three types of filter media: 1 piece activated carbon cotton, 2 pieces biochemical cotton and some ceramic balls, which have good filtration effect.

19,97 €
06

Forever Speed

Forever Speed 5-in-1 Aquarium Internal Filter with UVC Clarifier 8 Watt, Aquarium Filter Pump Including Adjustable Flow 650L/h for 100-300L Aquariums

Show more
9.2

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.

Show more
Main highlights

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 an 8 W UV cleaner that kills some micro-organisms, slows 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 650L/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.

29,99 €
07

AquaForte

AquaForte GUV-207 UV-C, Max Pond 6 m³, Max Flow 1.2 m³/hour, 7 Watt, Housing with Quick Lock Connection, Equipped with 3 Connectors: 3 Hose Nipples 20/25/32/40 mm and UV Sight Glass

Show more
9.1

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.

Show more
Main highlights

Quick lock. The case has a quick release for easy removal and cleaning of the quartz glass
Quick lock. The case has a quick release for easy removal and cleaning of the quartz glass
Protects your fish. The use of UV-C protects your fish from germs while helping to make your water clear
Protects your fish. The use of UV-C protects your fish from germs while helping to make your water clear
Multiple connections. Equipped with 3 connections: 3 hose nozzles 20/25/32/40 mm and UV sight glass
Multiple connections. Equipped with 3 connections: 3 hose nozzles 20/25/32/40 mm and UV sight glass
Less maintenance: Using UV-C ensures less maintenance of your pond and lower energy costs
Less maintenance: Using UV-C ensures less maintenance of your pond and lower energy costs
Environmentally friendly. The technology is environmentally friendly and prevents the possibility of overdosing
Environmentally friendly. The technology is environmentally friendly and prevents the possibility of overdosing

29,80 €
08

Mauk

Mauk UV-C Light Filter Algae Clarifier 7 W Including Replacement Light

Show more
9.0

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.

Show more
Main highlights

The UV-C radiation breaks the cell nuclei of the pests so that they collapse and clump together. This allows the downstream filter to absorb the algae that were previously too small to be collected. The certain wavelength does not affect plants and animals. The effect is exclusively on floating algae, harmful bacteria and pathogens.
Technical details: - Power: 1,200 l/h - Max. Pressure: 0.3 bar - Max. Pond size: 6,000 L - Cable length: 4.8 m - Connections: 3/4 - 1 1/2 inch - Weight: 1.6 kg
Powerful UV-C tube with quartz glass coating for increased service life cleans up to 6,000 litres of water in the pond, fountain, aquarium or water system within just 14 days.
Ideal for cleaning ponds or aquariums, whether fresh or salt water, indoors or outdoors. With integrated automatic emergency stop
Easy and installation of the UV-C light filter. So your fish, crabs and other aquatic inhabitants stay healthy and live long.
100% chemical free: absolutely harmless to fish and plants in your pond. The effect is exclusively on floating algae, harmful bacteria and pathogens.

39,90 €
09

BORDEAG

Aquarium UV Steriliser Light, 13 W UV Clarifier Aquarium with Timer, UV Sterilisation Lamp with Suction Cup, Bacteria Killer UV Lamp, UV Light Water Clarifier for Cleaning Aquarium, Fishbowl, Pond

Show more
8.8

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.

Show more
Main highlights

Wide application: this aquarium UV steriliser light is not only suitable for aquariums, but also for ponds, fountains and aquatic plants. It inhibits algae growth and improves water quality in various aquatic systems.
Timer function: aquarium UV steriliser light. Equipped with a practical timer that automatically turns off the lamp after preset times of 3, 6, 12 or 24 hours. This allows safe and convenient control of UV irradiation in the aquarium.
Safe Design The ends of the aquarium uv sterilizer light are equipped with thickened protective caps, which increase water resistance. Please note: it is recommended to place the germicidal lamp in the filter tank for use!
Effective Sterilization The aquarium uv sterilizer light eliminates over 99% of harmful bacteria in the water and ensures crystal clear water. It significantly reduces the risk of fish diseases and maintains a healthy aquarium environment.
Durable Material This aquarium UV lamp is made of heat resistant quartz glass, which ensures efficient UV irradiation and guarantees long-term stable sterilization effect. In addition, the material protects against water vapour penetration.

19,99 €
10

Pontec

Pontec PondoTronic UVC 7 - Black Universal UVC Clarifier for Clear Pond Water / for Effective Removal of Green Water

Show more
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.

Show more
Main highlights

UVC clarifier for clear pond water with optical function control for safe inspection of the bulb (suitable for ponds up to 7,000 litres without fish stock)
For effective removal of green water, caused by floating algae, as well as for reducing harmful germs and bacteria
Easy to retrofit and can be used universally with many filter models

54,95 €