Pentair Aquatics

Smart UV Sterilizer 18 Watt

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Unmatched UV Sterilizer Performance

  • For Aquariums up to 60 Gallons
  • Effective Against Bacteria and Water-Borne Algae Blooms
  • Design Maximizes Effective UV Contact Time
  • Multiple Sizes Available


Pentair Aquatics is a well-known player in the aquarium UV game and for good reason. Their long history of producing top-notch equipment for our aquariums is hard to match. Their Smart UV Sterilizers are robust, reliable, and most importantly effective. 


Why Use a UV Sterilizer?

A UV sterilizer is a valuable tool for an aquarium, using ultraviolet light to effectively combat harmful pathogens like bacteria, viruses, and parasites. This not only diminishes diseases but also tackles the issue of free-floating algae and bacteria that cause green and cloudy water. Their efficiency can potentially mean a reduced dependency on medications, especially beneficial when introducing new inhabitants to the tank. Importantly, this method is chemical-free and doesn't alter the aquarium's water chemistry.



For optimal performance, replace the bulb annually. This is crucial even if the light remains functional, as its emitted spectrum may shift over time, potentially decreasing efficacy. To maximize the UV light's efficiency, clean the quartz sleeve every few months to prevent buildup, ensuring unobstructed light exposure to the circulating water.


Minimum Operational Flow Rate: 37 GPH

Maximum Operational Flow Rate: 356 GPH



Max Aquarium Size: 60 Gallons

Number of Lamps: 1

Algae and Bacteria Water Flow Rate: 219 GPH/356 GPH (Suggested*/Maximum)

Protozoa Water Flow Rate: 37 GPH/60 GPH (Suggested*/Maximum)

Input Watts: 18 watts

UV-C Output Watts: 5 watts

UV Body Length: 21.75"

UV Body Diameter: 2.5"

Inlet/Outlet Size: 1.5" PVC Unions


*Suggested flow rates are based on 80% lamp output or "end of lamp's life" performance

*Maximum flow rates are based on 100% lamp output or new lamp output

*Flow rates consider 90% UV transmissibility

More Information
UPC 411225238
Instruction Manual Owners Manual
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Product Questions

Being that this unit is rated for 100g and under, the 1.5" slip union fittings seem a bit large for the plumbing system I will be creating. My return I believe will have 1" plumbing heading to the tanks 2x 3/4" return bulkheads...how do you suggest plumbing to the sterilizer? Is immediately reducing the unions acceptable? Thank you!
Question by: Sean Stuart on Mar 8, 2020, 2:56 PM
Hi there,

You can just use a reducing bushing to bring the union down to 1". They are found under out schedule 80 fittings.

Take care
Answer by: Thomas Billington on Mar 11, 2020, 12:04 PM