coospider-repta 100W UV-C Aquarium & Pond Sterilizer for 1,000–10,000 gal — Submersible, 17 ft Cord

The coospider-repta 100W UV-C aquarium and pond sterilizer uses concentrated ultraviolet-C light to reduce visible algae and airborne odors in water systems up to 10,000 gallons when installed in flowing water.

This submersible UV lamp is built for large aquaria, koi ponds, plunge pools and commercial water features that need targeted microbial and algal control without adding chemicals. Designed with heavy-duty quartz glass, multi-level seals, and an integrated gravity block for stable underwater placement, the unit connects with a 17-foot cord for flexible positioning. It is intended for periodic daily use and for installation where water passes directly across the lamp for best performance.

How does this UV light reduce green water and odors?

The unit emits UV-C energy that disrupts cellular structures in suspended algae and other microorganisms, which helps clear cloudy green water and reduce smell caused by organic activity. It does not chemically treat water; instead it inactivates organisms while they pass the lamp's irradiation zone.

• 100-watt UV-C output for high-intensity exposure
• High-transparency quartz sleeve improves penetration
• Best results when placed where water flows directly past the lamp
• Recommended run time: short daily sessions (1–3 hours) rather than continuous use

Where and how should I install the coospider-repta UV unit?

Install the lamp in a filter chamber, pond filter box, or a location with consistent flow to ensure water passes the UV exposure zone. For indoor aquariums, place it inside the filter or behind an opaque barrier to prevent direct UV exposure to fish and viewers.

• Submerge in filter housing or pond filter screen for best contact
• Use opaque panels or enclosure to block direct light from fish and people
• 17-foot cord allows connection to distant outlets or controllers
• Gravity block stabilizes the lamp on pond floors or filter beds

Is this UV lamp safe for aquatic life and people?

When used as directed—kept out of direct line-of-sight and mounted where fish will not receive direct UV exposure—the lamp is a non-chemical method to assist water clarity. The product features double end seals, thickened protective caps, and multi-level sealing designed for submerged operation, but users must follow installation guidance to avoid risks.

• Avoid direct UV light exposure to skin and eyes
• Place inside filters or behind opaque material for tanks
• Water-tight construction reduces electrical risk during normal use
• Follow recommended daily run time and the included installation video

What maintenance and lifespan can I expect from this UV sterilizer?

The lamp's operating life is approximately 8,000 hours; performance gradually declines after that period and replacement is recommended for consistent results. The quartz sleeve and seals should be inspected periodically and cleaned to maintain light transmission and water-tight integrity.

• Approximate lifespan: 8,000 operating hours
• Keep quartz glass clean for maximum effectiveness
• Inspect seals and end caps for wear or damage before each season
• coospider-repta provides a 365-day warranty and installation resources

Who is this for? This coospider-repta 100W UV-C lamp targets pond keepers, commercial water-feature operators, large aquarium hobbyists and cold-plunge or spa owners who need a non-chemical way to improve water clarity and reduce odors across large volumes (roughly 1,000–10,000 gallons). It suits users who can install the unit where water flows directly by the lamp, follow basic safety precautions to prevent direct UV exposure, and perform occasional maintenance like quartz cleaning and seal inspections.