Keep your aquarium water crystal clear and healthier with the IceCap In-Sump UV Sterilizer. Designed for saltwater, freshwater, and even pond use, this high-output UV sterilizer helps control and eliminate free-floating algae, bacteria, parasites, fungi, and protozoa, without the use of harsh chemicals. By reducing harmful microorganisms in the water column, it enhances water clarity, improves redox balance, and supports stronger immune function in fish and corals.

Built for ease of use, the IceCap In-Sump UV comes complete with secure mounting brackets, molded hose barbed fittings for flexible hose connections (1/2”, 3/4”, or 1”), and reliable high-output ballasts for consistent performance. Unlike permanent installations, this is a true plug-and-play sterilizer, complete with a properly sized feed pump—making setup and maintenance simple. The drop-in sump design means you don’t need complicated plumbing, and quick access to the lamp ensures stress-free replacements.

Best of all, while the IceCap UV is highly effective at killing suspended pathogens and microorganisms in the water, it does not harm beneficial bacterial colonies growing on your filtration media, substrate, or surfaces.

Key Benefits:

Kills free-floating parasites, bacteria, algae, fungi, and protozoa
Improves water clarity and overall aquarium health
Plug-and-play installation with included feed pump
No chemicals or additives required
Safe for beneficial bacteria in filter media and substrate
Secure, flexible mounting options with included brackets and fittings

Available Models:

IceCap In-Sump 18W UV Sterilizer (Ideal for All-In-One Aquariums)

Freshwater up to 600 gallons
Saltwater up to 60 gallons
Dimensions: 3.5” x 3.5” x 18.4”
Pump: DC-700 (included)
Lamp Life: 10,000 hours

IceCap In-Sump 27W UV Sterilizer

Freshwater up to 1,300 gallons
Saltwater up to 140 gallons
Dimensions: 4.6” x 4.3” x 22”
Pump: EVO 1000 (included)
Lamp Life: 10,000 hours

UV Sterilizers

In-Sump High Output UV Sterilizer - Open Box - IceCap