Best UV Sterilizer Freshwater Aquarium Reviews Of 2020 – Our 5 Picks!

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With the invention of UV sterilizer, the water purifying process in an aquarium has been straightforward and impactful. A UV sterilizer can keep water out of all contaminants and gives fish a breathable environment in an aquarium. If you’re suffering a bit in purifying your aquarium’s water, you can’t help reaching out to the best UV sterilizer freshwater aquarium. But it needs a long time to find out the ideal one that assembles all the features and facilities.

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However, we can aid you in having to prospected UV sterilizer to free water from microorganisms. You’re going to acquaint with some clinically proven UV sterilizers that work with UV light technology. To choose the perfect one, you have to read the full review at first. Let’s dive into the context!

How Does UV Aquarium Sterilizer Work?

In general, a UV aquarium sterilizer works with UV light technology to kill waterborne germs, parasite, algae, bacteria, and many pollutants. The germicidal fluorescent lamp produces light to damage the contaminants of water and makes water out of danger. A UV sterilizer can fight against microorganisms actively than other chemicals.

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You will have crystal clear water with the proper application of a UV sterilizer. A UV sterilizer assembles pump, LED screen, pre-filter, and many more accessories to aid you most. Even, you can easily install it and use it with no concern as it UL safety tested.

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Comparison Chart: 

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Coralife Turbo Twist UV Sterilizer, 3X

AA Aquarium Green Killing Machine 24Watt | Internal UV Sterilizer System with Power Head

Jebao 36W Aquarium Koi Fish Pond UV Light Sterilizer

Brother123shop 9W Sterilizer UV Aquarium Gallon Filter with Pump Submersible 75 Gallon

SunSun JUP-01 9W UV Sterilizer Submersible Filter Pump

5 Best UV Sterilizer Freshwater Aquariums Reviews 2020

Here are the in-depth reviews of our chosen UV sterilizers. You’re highly requested to stick here for a while to meet your needs.

1. Coralife Turbo Twist UV Sterilizer

Coralife Turbo Twist UV Sterilizer

If you want to keep the water of your aquarium free from bacteria, germs, algae, parasite, and many microorganisms, you must go for this clinically proven UV sterilizer. It will damage all of the remained contaminants from the tank and keep the water clean. As it works with ultraviolet light, therefore, it will fight off the dangerous pollutants actively. The twist-flow design of this UV sterilizer can increase exposure to UV light noticeably. You will have crystal clear aquarium water with no concern about health applying this sterilizer.

It features an indicator light so that you can get hints of its operation. The mounting brackets will aid you most to hang it on and apply it more comfortably. Therefore, as it comes with a flexible design, you can position it effortlessly both horizontally and vertically. Most notably, you will have a straightforward setting and using the facility with this quality sterilizer. You can apply it for a giant aquarium with up to 500 gallons of weight capacity.

Furthermore, this UV sterilizer is perfect for both saltwater and freshwater aquariums. You don’t need to use gloves as it comes with UL safety testing. The fighting performance against contaminants of water makes it the best aquarium UV sterilizer. You can purchase it at a lower price and find all the required features at ease. From all viewpoints, you should pick this quality product as soon as possible.

Coralife Turbo Features:

  • This UV sterilizer works with ultraviolet light to alleviate algae, bacteria, and the contaminants of water.
  • It’s applicable for up to 500 gallons, and you can use it for both freshwater and saltwater aquariums.
  • It features an indicator light to inform you of the sterilizer operating period.
  • The twist-flow design always increases the exposure of UV light and fight actively against microorganisms.
  • It has mounting brackets to give you a comfortable hanging facility and in-line applications.

2. AA Aquarium Green Killing Machine 24Watt

AA Aquarium Green Killing Machine 24Watt

It comes with improved UV technology to remove microorganisms’ growth and prevent all the dangerous contaminants from your aquarium’s water. You will have crystal clear water within a short time since it fights against algae, bacteria, and germs actively. It’s very safe and hygienic in use as it features a tested UL safety internal UV kit. The patented sealed UV bulb will aid you most in getting a clean water supply in your aquarium.

It works with a 254nm wavelength of UV radiation filtration to damage the impurities of the water. With its control box LED, you will have an alarm when you need to change bulbs. You don’t need touch glass to accomplish the job. It takes only ten minutes to be installed and has a filtration pump of 440L per hour. It’s perfect for a large aquarium up to 120 gallons. You will have four pcs sponge pre-filter to have the best outcome in cleaning water.

The installation process of this sterilizer is straightforward, and you can apply it to any tank irrespective of size. With this excellent sterilizer, you can get clean and freshwater within ten hours only. You can purchase it at a reasonable price range and will have the best reward by all means. However, no doubt, it’s the best UV sterilizer for saltwater aquarium. You can choose it without any doubt to have your aquarium free from all impurities.

AA Aquarium Features:

  • It’s an excellent UV sterilizer that can work against bacteria, algae, and germs of water in an aquarium.
  • It comes with a UL safety tested internal UV kit to clean water and safe the fish of aquarium.
  • It features a patented sealed UV bulb for giving outstanding efficiency and perfect for 120 gallons of the aquarium.
  • It has a control box LED to tell you the time of changing bulbs and perfect for saltwater.
  • It has four pcs sponge pre-filter, and the pump rate of this sterilizer is 440L per hour.

3. Jebao 36W Aquarium Koi Fish Pond UV Light Sterilizer

Jebao 36W Aquarium Koi Fish Pond UV Light Sterilizer

If you’re having a tough time searching for the exact UV sterilizer for your aquarium, you can reach out to the Jebao 36W UV light sterilizer. You can use it to control algae and kill protozoa of water. It can also quickly destroy the single-celled organism, including germs, bacteria, and more contaminants within a short time. As it comes with UL safety testing, it will be hygienic and safe in use as well.

Meanwhile, this UV sterilizer has added UL listed sealed transformer and a 22 ft cord to make the job effortlessly done. The 36w ultraviolet bulb will aid you most in getting a prospected water cleaning facility. It features up to 4400 GpH max flat rate and provides an easy installation process to get the best sterilization effect. Most importantly, its ultraviolet lamp emits germicidal rays to disrupt the RNA or DNA of damaging microorganisms.

You will find an adequate pre-filter to prevent the quartz sleeve. With the swimming pool muriatic acid, you can easily clean it up. It’s one of the renowned brands for manufacturing UV sterilizer. Even It’s the best UV sterilizer for koi fish as well. It’s applicable for both saltwater and freshwater as well. You’re highly requested to stick to this quality product without any suspicion.

Jebao 36W Features:

  • This UV sterilizer can protect germs, bacteria, and many more dangerous contaminants by cleaning the aquarium’s water.
  • It features UL listed sealed transformer and a 22 ft cord to give the best comfort in use.
  • You can use it without risk as it is safe, hygienic, and install it within a short time.
  • It’s perfect for both freshwater and saltwater and has a 4400 GpH max flat rate.
  • You will have peak performance through its 36W ultraviolet bulb for a long time.

4. Brother123shop 9W Sterilizer UV Aquarium Gallon Filter

Brother123shop 9W Sterilizer UV Aquarium Gallon Filter

It can be claimed as the best UV sterilizer freshwater aquarium due to its cleaning performance in freshwater. You can easily damage the germs, bacteria, and many more aggressive microorganisms from water applying this excellent sterilizer. It predominantly works with ultraviolet technology to enhance the purification of water. You can use it for a large aquarium with up to 75 gallons. The 9W UVC light bulb will make the sanitization process very easy.

You will get the best support in purifying the water of your aquarium as it comes with 211gph max flow and 8watt power built in the pump. It’s applicable for a large tank of approximately 75 gallons. The mechanical pre-filter sponge is prompt enough for capturing debris to optimize UV exposure. Moreover, you will have additional support through its suction cup mounting brackets. The air tubing system enhances the scope of water purifying noticeably.

This UV sterilizer is capable of killing all the pollutants of your aquarium within less than ten hours. You don’t need to use an external pile or suction as it features smooth submersible accumulation. You will get an indication of replacing time through its LED screen as well. However, if you compare this sterilizer with other sterilizers, you can discover how efficient it’s than other products.

Brother123shop Features:

  • It’s a clinically proven UV sterilizer that can kill germs, bacteria, and other pollutants.
  • It features a built-in pump to direct the waterborne organisms.
  • It works with a 9W UVC light bulb and perfect for up to a 75-gallon tank.
  • Its twist-flow style can enhance the exposure of ultraviolet light, notably.
  • You can easily install it, use it without any risk, and find up to 211gps of max flow.

5. SunSun JUP-01 9W UV Sterilizer Submersible Filter Pump

SunSun JUP-01 9W UV Sterilizer Submersible Filter PumpIt’s deemed as the best UV sterilizer for planted aquarium because of its pollutants killing effectiveness. You will have clean, fresh, and hygienic water into your aquarium applying this ultraviolet technological sterilizer. The pre-filter sponge can capture debris and enhance the exposure of UV light. The suction cup mounting brackets make it very effortless to use and beneficial for protecting harmful microorganisms.

You can install it quickly as it features compact and versatile units. Without any additional tubing, you will have optimum UV performance through this sterilizer. Most importantly, it features a built-in pump to direct the waterborne organisms past the UV-C lamp. In both vertically and horizontally, you can position it right in your aquarium. It works efficiently for fresh and saltwater aquariums and gives a clean and hygienic environment in the aquarium.

It’s perfect for a large tank or aquarium up to 75 gallons. The flow rate of this sterilizer is 210 gallons per hour. The 9 watt UV light makes it qualitative than other sterilizers. With the dimension of 12×3.3×3.75, it has been the most favorable UV sterilizer to the user. In a word, it has assembled all the required features and advantages to clean up the water of your aquarium. You can purchase this excellent product without any concern.

SunSun JUP Features:

  • This UV sterilizer can control harmful microorganisms and algae very effectively from the water of your aquarium.
  • It features a built-in pump to direct the organisms past the UV-C lamp for a better cleaning facility.
  • It assembles a pre-filter sponge to capture the debris and to increase the UV exposure.
  • You can easily install it and apply it for the large aquarium up to 75 gallons.
  • It’s perfect for fresh and saltwater and has a 210 gallon per hour flow rate.

Are UV Sterilizers Good For Freshwater Aquariums?

The UV sterilizers are specially designed to kill waterborne microorganisms lick germs, viruses, bacteria, algae, etc. A sterilizer works with ultraviolet light technology to fight against contaminants of the water of an aquarium. Particularly in freshwater, a UV sterilizer can accomplish its job and makes water neat, clean, and hygienic.

If you pick one of the best UV sterilizer freshwater aquariums, you will get rid of all pollutants and have a supportive environment for fish. With the twist-flow style, a sterilizer can enhance UV light exposure to capture freshwater’s harmful elements. Also, the built-in pump directs organisms and, ultimately,  clean water. In substance, the UV sterilizers are always suitable for freshwater aquariums.

What To Consider When Choosing Your UV Sterilizer Freshwater Aquarium?

You must keep some crucial factors in mind when choosing a UV sterilizer for a freshwater aquarium. With the assembly of all the required features and advantages, you can expect to get your job correctly done. Some of the crucial considerations are given below in brief.

Effectiveness against pollutants:

You’re going to purchase a sterilizer to damage all the waterborne pollutants of your aquarium. What if your sterilizer can’t fight against contaminants? It will be very distressing and losing the incident to you whenever your purchased sterilizer will be failed to clean up water by killing bacteria, germ, algae, and so on. So, you must keep a sharp eye on the microorganism, killing capacity of a sterilizer before choosing it.

Size of your aquarium:

As per your aquarium size, you have to finalize a specific UV sterilizer. If you have a large aquarium, you must reach out to such a sterilizer designed for a larger tank. For a smaller and medium aquarium, you can be happy with conventional sterilizers. Whenever you could apply the exact sterilizer considering the amount of water, you will have the expected outcome with no hassle.

Adjustable pump and pre-filter sponge:

A UV sterilizer works more precisely and efficiently with the assistance of an adjustable pump and pre-filter sponge. The pump always directs the waterborne organisms past the UV-C light to clean water soon. By enhancing the expose of ultraviolet, the mechanical pre-filter sponge keeps crucial contributions in purifying water. You must choose a sterilizer that has those two impactful features.

UV bulb and LED screen:

If your sterilizer features a powerful UV bulb, the overall water purifying process will be more comfortable and successful with less toil. You can accomplish the whole process by managing the utmost safety and hygiene. The UV bulb will let you clean water without touching the glass, while the LED screen will hints you the exact time of replacing the UV bulb. Hence, you must stick to such a sterilizer that contains an LED display and a UV bulb.

Budget and installing process:

The budget is another inevitable consideration for you to have the best outcome. You can go for high priced UV sterilizer if you afford to spend handsome money. But with proper research, you can also manage all the required facilities at a moderate price range. On the other hand, you must look for a sterilizer with an easy installing process. Otherwise, you have to suffer a lot during the operating period.

Frequently Asked Questions

Now we’re going to answer some frequently asked questions. You can pay attention to this section to know more information about UV sterilizers.

Is UV sterilizer safe for fresh?

There is no harmful chemical in UV sterilizer. A UV sterilizer generally works against waterborne pollutants; it’s always safe for fish.

Should I use a UV sterilizer in the aquarium?

Applying UV sterilizer is the best method of purifying the water inside of an aquarium. You can manage clean, fresh, and hygienic water supply in the aquarium for the fish by dint of a UV sterilizer.

How long should I run the UV aquarium sterilizer?

As per the support of the UV bulb, you can run the UV sterilizer for a long time at ease. With regular care, you can utilize a UV sterilizer for up to 12 months.

Does UV light kill beneficial bacteria in the aquarium?

A UV sterilizer works with UV light to kill bacteria, germs, and algae of the aquarium. It may kill the beneficial bacteria in the aquarium as well.

Does UV sterilizer kill viruses?

A UV sterilizer is prompt in killing waterborne viruses and keeping the water of an aquarium neat and clean.

Final Thought

With the touch of a UV sterilizer, you can supply thoroughly clean and hygienic water in the aquarium. The fish of your aquarium will find a breathable environment with the proper application of a UV sterilizer. If you’re determined to have a superb one, you can choose one of our reviewed sterilizers from here.

The Brother123shop 9W Sterilizer UV Aquarium Gallon Filter is the best UV sterilizer freshwater aquarium for its waterborne pollutants killing performance. You will have the best support in purifying water through its UV light technology. It features a pre-sponge, LED screen, and a built-in pump to accomplish the job. The SunSun JUP-01 9W UV Sterilizer Submersible Filter Pump can also be your best choice as it assembles all the required advantages.



Hi, I am Kevin Jackson, I am a businessman and a blogger. I have a shop,  where I sell UV sanitizers and its related accessories. As I am the only one who operates the business, I have to deal with so many clients of the UV sanitizer users. During my business hours,  I saw many clients face difficulties with uses, maintenance, & not getting the exact amount of service, buying the wrong one. All those problems they face because of their lack of knowledge about this product. 


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