40 Watt High Output UV Sterilizer

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The IceCap UV sterilizers can be used on saltwater, freshwater, and ponds to help control and even eradicate parasites, algae, fungi, bacteria, and protozoa without any harmful chemicals or biocides. When set up, maintained, and properly operated; free-floating microorganisms will be killed by the high output UV light as it passes through the sterilizer.

  • Kills most suspended bacteria and viruses in the water column
  • Will not affect beneficial colonies in filter media and substrate
  • Improves redox balance in aquariums and ponds
  • Aids in control of parasites
  • Can be mounted vertically or horizontally
  • Includes secure mounting brackets
  • Can be plumbed using standard PVC fittings
  • Optional molded barbed fittings included for easy installation with tubing


Plumbing your UV Sterilizer

Plumbing to and from the UV Sterilizer is completely up to you. The most common practice is to have the UV spliced into your filtration's return line with a return pump or a canister filter. If using the included barbed fitting, you must glue them to the PVC Adapter (also included). PVC plumbing can be achieved using standard 2 inch PVC found at any local hardware store. The size in and out can be reduced to the desired size to accommodate your system's plumbing. Use a bypass assembly for greater water flow control and ease of service.


Wattage 27w 40w 90w
Lamp Length 11.3" 15.75" 35.2"
Current 800mA 800mA 800mA
UVC Output (uW/cm2) 75 105 270
Lamp Life (hrs) 10000 10000 10000
Inlet Size 2" 2" 2"
Output Size 2" 2" 2"
Max. Flow Rate - Marine 600 gph 1000 gph 3000 gph
Max. Flow Rate - Freshwater 1500 gph 3000 gph 12000 gph
For Marine Water Volumes Up to 140 gallons Up to 400 gallons Up to 1000 gallons
For Freshwater Water Volumes Up to 1300 gallons Up to 3000 gallons Up to 12000 gallons
More Information
SKU 250629
UPC 6972809520031
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Product Questions

Does this have an automatic shutoff when it overheats (or there is no flow to cool the lamp)?
Question by: Angel on Nov 23, 2022, 10:34 PM
Thanks for the question! This does not have an auto shut off function. Flow is based on the pump you put in the UV. It is important to put the pump in an area where water level will not change!
Answer by: James Johnson (BRS Staff) on Nov 26, 2022, 12:17 PM
Can the icecap 40 watt UV sterilizer be mounted horizontally or vertically
Question by: Michael Foster on Sep 29, 2022, 11:14 AM
It can be mounted both horizontally or vertically. If mounting it vertically, the input needs to be on the bottom.
Answer by: William Reed (BRS Staff) on Sep 29, 2022, 12:29 PM