IceCap In-Sump 18w UV Sterilizer — Internal Assembly (IC-UVR-18INT)
The IceCap In-Sump 18W UV Sterilizer (SKU: IC-UVR-18INT) is an authentic, completely integrated water purification system distributed by CoralVue to promote elite biosecurity and crystal-clear water conditions in freshwater setups up to 600 gallons and marine reef systems up to 60 gallons. Standard traditional UV sterilizers require complex external plumbing paths, requiring users to cut vinyl lines, secure hose clamps, and find space under the cabinet to hard-mount bulky plastic canisters that run a constant risk of leaking. The IceCap In-Sump series completely rewrites this framework by moving the entire vessel directly inside your existing filtration sump footprint. If a seal ever experiences a slow leak, the water falls harmlessly back into your filtration basin, offering absolute peace of mind against room floods.
This complete kit arrives with an energy-efficient IceCap DC-700 Feed Pump, matched precisely to handle the internal fluid dynamics of the 18-watt radiation chamber. As the pump forces an optimized stream of water past the high-output UVC lamp, the radiation instantly targets free-floating pathogens and single-celled algae cells. This targeted process shatters the internal cellular bonds of green hair algae spores and infectious microscopic parasites before they can settle onto your fish or rocks. Because it only acts on organisms suspended in the water moving through the unit, it will never disrupt or degrade the beneficial nitrifying bacterial colonies growing securely on your stationary bio-media, sand bed, or liverock.
Key Features
Eradicates Green Water Outbreaks: Destroys free-floating micro-algae cells in the water column, preventing dense green water blooms and maintaining pristine visual clarity.
Suppresses Aquatic Pathogens: Drastically reduces infectious pathogen counts in the water loop, protecting your fish and corals against horizontal disease transfer.
Tool-Free Maintenance Engineering: Hand-tightened ballast cap and top sealing thumb screws allow for stress-free monthly maintenance and straightforward annual bulb replacements.
(Note: This self-contained internal filtration unit contains (1) 18W UV housing, (1) DC-700 feed pump, an 18-watt high-output bulb, a quartz sleeve, and mounting bracket clips. Replacement lamps and quartz housings are sold under separate product categories).
IceCap In-Sump UV Sterilizer Specification Matrix
| Model Classification |
SKU Part Number |
Target Marine Sizing |
Target Freshwater Sizing |
Included Feed Pump Model |
Physical Footprint Scale |
| IceCap In-Sump 18W |
IC-UVR-18INT |
Up to 60 Gallons |
Up to 600 Gallons |
IceCap DC-700 (8.5W) |
3.5" x 3.5" x 18.4" |
| IceCap In-Sump 27W |
IC-UVR-27INT |
Up to 140 Gallons |
Up to 1,300 Gallons |
IceCap EVO 1000 (15W) |
4.6" x 4.3" x 22.0" |
| IceCap In-Sump 40W |
IC-UVR-40INT |
Up to 400 Gallons |
Up to 3,000 Gallons |
IceCap EVO 2000 (30W) |
5.4" x 5.1" x 24.0" |