Aqua Ultraviolet

25 Watt Classic UV Sterilizer - White Body

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$408.60 $408.60

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Aqua Ultraviolet UV Sterilizers will eradicate algae, bacteria, and protozoa without any harmful chemicals or additives!

UV lamps emit a wavelength that will alter and disrupt the DNA or RNA of single-celled organisms. Combining the UV lamp into a large housing allows for maximum contact time with the lamp allowing the sterilizer to be much more efficient. By changing the flow rates through the body of the UV sterilizer lets you target the specific issue you may be having. Most reefers will report that their tanks water clears up overnight with others taking just a couple days, and as long as the UV is running, the water will stay crystal clear! Every 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, allowing you to mount the UV Sterilizer without having to worry about having room for quartz sleeve and bulb changes. 

  • Clear Blue Quartz Cap - Lets you see when the lamp is on
  • EZ-Twist Cap - Quick and easy quartz sleeve maintenance
  • Quick Release Unions - Remove the entire body without any dismantling your plumbing


Great for tanks up to reef tanks up to 150-gallons

Suggested flow rate for saltwater aquarium sterilization - 400 GPH


How UV Works?

Ultraviolet sterilizers are used in a wide variety of industries for sterilization, and in your saltwater aquarium they work wonders at controlling unwanted bacteria and protozoa at low flow rates, but at higher flow rates can help maintain free-floating algae which are a common cause of cloudy tank water. The UV Lamp emits a UV-C wavelength that will pretty much destroy the internal structure of any single-celled creature that comes in contact with the light. 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. By varying the flow rate through the sterilizer and increasing or decreasing the amount of time the water is in the body will change what your UV sterilizer will be targeting and we highly suggest using a gate valve or a DC pump to control the flow through the 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. By replacing the quartz sleeve about once per year, and also the UV lamp, your UV sterilizer will work just like it did on day one. Most reefers will know it is time to replace the bulb and sleeve when algae starts to grow on the glass, rock, and other surfaces more rapidly. 



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"


Suggested Aquarium Sizes:

Saltwater Sterilization - 150 gallons

Freshwater Sterilization - up to 1200 gallons

Freshwater Clarification - up to 4000 gallons


Recommended Flow Rate for Saltwater Applications:

Saltwater Reef Applications: 800 GPH - 1200 GPH

Protozoa Bacteria Water Flow Rate: 400 (min), 1200 GPH (max)


What's Included?

1x 25-Watt Classic UV Sterilizer

1x 25-Watt Classic Power Transformer

1x 25-Watt UV Lamp

2x 3/4" Barb Fittings


More Information
UPC 617750000244
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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