Aqua Ultraviolet

25 Watt Classic UV Sterilizer - White Body

In stock
Out of stock

- +

Effective Water Clarification & Sterilization

  • Easily Achieve Crystal Clear Water
  • Will Not Alter Water Chemistry
  • Quick and Easy Quartz Sleeve Maintenance
  • Quick Release Unions
  • Available in Black or White


Aqua Ultraviolet is one of the most popular options available and has been in the UV game for more than four decades creating UV sterilizers for use across multiple industries including aquaculture and food & beverage on the commercial side to aquariums and ponds for home use. They're simple in construction, well built, and they're made in the USA. 


How UV Sterilizers Work

Ultraviolet sterilizers are a time-tested approach to water clarification and sterilization. They emit a germicidal UV-C ray that will alter the DNA or RNA of single celled organisms like algae, bacteria, and protozoa, rendering them unable to reproduce. The result is crystal clear water without the use of any chemicals. Using a UV sterilizer will not alter water chemistry. 

Aqua Ultraviolet sterilizers include a clear-blue cap that lets you see when the lamp is powered on, without having to risk any exposure to the harmful UV-C rays. How effective the UV sterilizer is greatly depends on having the proper flow rate through the sterilizer body, so we highly suggest using a valve or a DC pump to control the flow through the UV sterilizer. For freshwater aquariums, AquaUV suggests 1200 gallons per hour for the 25 Watt Classic UV Sterilizer. 



Over time the efficiency of the sterilizer will start to diminish because the lamp is no longer putting out the same amount of energy, but also the quartz sleeve that houses the lamp can become coated with mineral deposits and start to become cloudy. We suggest cleaning the quartz sleeve a few times each year and replacing the UV lamp annually. This AquaUV Sterilizer includes quick-connect unions on the input and output allowing you to quickly remove the entire system from your aquariums plumbing for maintenance. With proper maintenance, your UV sterilizer will work like it did from day one.



Dimensions - 20" L x 3.75" W x 6" H

Input Size - 3/4" Barb

Output Size - 3/4" Barb

Power Consumption - 25 Watts

Wall Outlet to Transformer Cord Length - 15 Foot

Transformer to Lamp Connector Length - 32"


Aquarium Size Recommendations: 

Freshwater Sterilizer: Up to 1200 Gallons

Freshwater Clarifier: Up to 4000 Gallons

Flow Rate: 1200 GPH


What's Included?

25-Watt Classic UV Sterilizer

25-Watt Classic Power Transformer

25-Watt UV Lamp

2x 3/4" Barb Fittings

More Information
UPC 617750000244
Write Your Own Review
You're reviewing:25 Watt Classic UV Sterilizer - White Body
Your Rating
Only registered users can write reviews. Please or

Product Questions

Yes does mounting/plumbing it horizontal or vertical matter? And then plumbing it in should return water go into the return line going to display tank or is it fine going back to the sump?
Question by: Sven Pflug on Jan 10, 2024, 6:14 AM
This unit can be installed either horizontally or vertically. It is not recommended to have the return from the UV go back into the sump, as you can end up recycling the same water through the UV and have a less efficient water sterilization.
Answer by: Laura (BRS Staff) on Feb 8, 2024, 4:19 PM
Hi. I just ordered the Aqua 25 watt sterilizer. I understand it has 3/4 barb fittings. I plan to use my Cor15 that has a 3/4 pipe.
If I want to add Neptune flow sensor would you go smaller, 1/2 inch or larger 1 inch since they do not make 3/4?
Thanks in advance.
St Petersburg Fl.
Question by: Jack Scelsi on Jul 30, 2022, 8:54 AM
Thanks for reaching out to us! In order to avoid resticting flow with reducing, we'd recommend using the 1" flow sensor for best results. Please let us know if we can help with anythinig else!
Answer by: Kyle Thomas (BRS Staff) on Aug 2, 2022, 2:35 PM
What’s the difference between this UV sterilizer and the Pentair? Why are you guys carrying this one now?
Question by: mark crawford on Jan 23, 2020, 7:31 AM
Hey there!

There is not going to be a big difference. They are both pretty similar in function and design. We just wanted to carry another option besides Pentair.
Answer by: Thomas Billington on Jan 23, 2020, 3:35 PM