Aqua Ultraviolet

15 Watt Classic UV Sterilizer - Black Body

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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 75-gallons

Suggested flow rate for saltwater aquarium sterilization - 233 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 - 16" L x 3.75" W x 6" H

Input Size - 3/4" Barb

Output Size - 3/4" Barb

Power Consumption - 15 Watts

Wall Outlet to Transformer Cord Length - 15 Foot

Transformer to Lamp Connector Length - 32"


Suggested Aquarium Sizes:

Saltwater Sterilization - 75 gallons

Freshwater Sterilization - up to 500 gallons

Freshwater Clarification - up to 2000 gallons


Recommended Flow Rates for Saltwater Applications:

Saltwater Reef Applications: 466 GPH - 700 GPH

Protozoa Bacteria Water Flow Rate: 233 (min), 700 GPH (max)


What's Included?

1x 15-Watt Classic UV Sterilizer

1x 15-Watt Classic Power Transformer

1x 15-Watt UV Lamp

2x 3/4" Barb Fittings


More Information
UPC 617750000305
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Product Questions

What size do you recommend for a Red Sea 350?
Question by: Kenny Etter on Apr 3, 2024, 2:39 PM
Hi there, thanks for the question! It is always recommended to oversize your UV. I would recommend the 25W for a Red Sea 350 at least.
Answer by: Grace (BRS Staff) on Apr 4, 2024, 11:57 AM
What size are the quick-connect unions?
Question by: John Walsh on May 18, 2022, 2:45 PM
Hey John, thanks for the question. The input and output on these UVs are 3/4"
Answer by: James Johnson (BRS Staff) on May 19, 2022, 10:07 AM
What size clamps are required to securely mount this UV Sterilizer?
Question by: David Holbrook on Mar 29, 2022, 8:11 AM
The link and model below will work for the Aqua Ultraviolet UV Sterilizers.

2" Clamp for PVC Pipe
SKU: 208418
Answer by: Rick Pucciarella (BRS Staff) on Apr 1, 2022, 10:12 AM
I’m looking at 15 watt classic UV sterilizer in the details at top it says flow rate 233GPH
further down it says saltwater application 466 to 700 GPH
I’m looking for a UV sterilizer for a xl 200 Red Sea that will be housing seahorses
Would this be a good choice and what flow would I want
Thanks for any help
Question by: Don on Mar 19, 2022, 7:25 AM
Hey Don, thanks for the question! I would suggest the 8 watt UV as this will likely be enough for you. The different applications are specified for algae control vs protozoan. Protozoa Bacteria Water Flow Rate: 214 (min), 642 GPH (max)

Answer by: James Johnson (BRS Staff) on Mar 23, 2022, 2:57 PM
The picture shows a stepped barb fitting. What are the 2 sizes of the barbs as well as the NPT size?
Question by: Dwain Leach on Jan 17, 2022, 2:54 PM
Hey Dwain, we appreciate the reach out! The barb fittings included with these Classic UV's is a 3/4" barb x 3/4" NPT. The stepped portion should allow you to also attach 1/2" tubing if neccessary!
Answer by: JJ (BRS Staff) on Jan 21, 2022, 8:57 AM