4 Best Aquarium UV Sterilizers 2025: According to Reviews | Chewy

The 4 Best Aquarium UV Sterilizers

Jump to the list

How we created this aquarium uv sterilizer list

We leveraged input from our veterinarians and artificial intelligence to identify key considerations to help you find the best aquarium uv sterilizer.
We scanned thousands of customer reviews and ratings and scored each product based on its performance against each of the key considerations. We then considered how popular a product is with Chewy customers and combined that with its key consideration scores to create the list of the best aquarium uv sterilizers.

Key aquarium uv sterilizer considerations

Durability and Maintenance

Flow Rate

Size and Capacity

UV Sterilization Effectiveness

1
AA Aquarium Green Killing Machine Internal UV System, 9-watt
AA Aquarium Green Killing Machine Internal UV System, 9-watt
AA Aquarium Green Killing Machine Internal UV System, 9-watt
AA Aquarium Green Killing Machine Internal UV System, 9-watt
AA Aquarium Green Killing Machine Internal UV System, 9-watt
AA Aquarium Green Killing Machine Internal UV System, 9-watt
AA Aquarium Green Killing Machine Internal UV System, 9-watt
AA Aquarium Green Killing Machine Internal UV System, 9-watt
AA Aquarium Green Killing Machine Internal UV System, 9-watt

AA Aquarium Green Killing Machine Internal UV System, 9-watt

Rated 4.4 out of 5 stars
377
$69.99Chewy Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Durability and Maintenance

4.3/5
Great

Flow Rate

4.4/5
Great

Size and Capacity

4.4/5
Great

UV Sterilization Effectiveness

4.4/5
Great

Is this aquarium uv sterilizer right for my pet?

Aquarium Type

Freshwater, Saltwater
2
Tetra GreenFree Ultraviolet Pond Clarifier, 9-watt
Tetra GreenFree Ultraviolet Pond Clarifier, 9-watt
Tetra GreenFree Ultraviolet Pond Clarifier, 9-watt
Tetra GreenFree Ultraviolet Pond Clarifier, 9-watt
Tetra GreenFree Ultraviolet Pond Clarifier, 9-watt
Tetra GreenFree Ultraviolet Pond Clarifier, 9-watt

Tetra GreenFree Ultraviolet Pond Clarifier, 9-watt

Rated 4.7 out of 5 stars
40
$124.00Chewy Price

Our ratings

Durability and Maintenance

4.4/5
Great

Flow Rate

4.6/5
Excellent

Size and Capacity

4.5/5
Great

UV Sterilization Effectiveness

4.5/5
Great

Is this aquarium uv sterilizer right for my pet?

Material

Plastic

Aquarium Type

Pond

Fish Type

Koi & Pond Fish
3
AA Aquarium Green Killing Machine Clip-On UV System, 3-watt
AA Aquarium Green Killing Machine Clip-On UV System, 3-watt
AA Aquarium Green Killing Machine Clip-On UV System, 3-watt
AA Aquarium Green Killing Machine Clip-On UV System, 3-watt
AA Aquarium Green Killing Machine Clip-On UV System, 3-watt

AA Aquarium Green Killing Machine Clip-On UV System, 3-watt

Rated 4 out of 5 stars
98
$39.99Chewy Price
Promo, Spend $100, Get $30 eGift Card with code HAVEFUN

Our ratings

Durability and Maintenance

4.2/5
Great

Flow Rate

4.2/5
Great

Size and Capacity

4.2/5
Great

UV Sterilization Effectiveness

4.5/5
Great

Is this aquarium uv sterilizer right for my pet?

Aquarium Type

Freshwater, Saltwater
4
Coralife BioCube Aquarium Mini Ultraviolet Sterilizer
Coralife BioCube Aquarium Mini Ultraviolet Sterilizer
Coralife BioCube Aquarium Mini Ultraviolet Sterilizer
Coralife BioCube Aquarium Mini Ultraviolet Sterilizer
Coralife BioCube Aquarium Mini Ultraviolet Sterilizer
Coralife BioCube Aquarium Mini Ultraviolet Sterilizer
Coralife BioCube Aquarium Mini Ultraviolet Sterilizer
Coralife BioCube Aquarium Mini Ultraviolet Sterilizer
Coralife BioCube Aquarium Mini Ultraviolet Sterilizer

Coralife BioCube Aquarium Mini Ultraviolet Sterilizer

Rated 4.3 out of 5 stars
33
$56.95Chewy Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Durability and Maintenance

4.4/5
Great

Flow Rate

4.7/5
Excellent

Size and Capacity

4.7/5
Excellent

UV Sterilization Effectiveness

4.7/5
Excellent

Is this aquarium uv sterilizer right for my pet?

Aquarium Type

Freshwater, Saltwater

Fish Type

Betta, Goldfish