coospider-repta 24W Inline UV Clarifier — 254nm Stainless Steel for Aquariums & Ponds (75–1000 gal)

The coospider-repta 24W inline UV light is a compact ultraviolet clarifier designed to reduce green water and suspended algae in aquariums, ponds, pools and cold plunge systems by exposing circulating water to a 254nm UV lamp.

This inline UV clarifier pairs a 24W 254nm germicidal lamp with a stainless-steel housing and multiple inlet fittings so you can add UV treatment to existing pumps and filter loops. It is intended for external, inline installation — not for continuous submersion — and works by passing water through the chamber so algae, free-floating microbes and organic particles are exposed to UV light before returning to the system.

How does this unit reduce green water and algae blooms?

The clarifier treats water as it flows through the stainless-steel chamber, using a focused 254nm UV wavelength to target free-floating algae and reduce visible green tint. It does not replace mechanical filtration but complements pumps and filters by targeting microorganisms that mechanical media can miss.

• 24W 254nm lamp for effective UV exposure of passing water
• Inline design forces water past the lamp for consistent treatment
• Best results when paired with pre-filtration to remove large debris
• Suitable for systems from ~75 to ~1000 gallons depending on flow rate

What are the installation requirements and compatible connections?

Installation is straightforward: mount the unit outside the tank or pond, connect it to a circulating pump, and match the supplied interface sizes. The clarifier accepts common hose/thread sizes and is designed to work with pumps, waterfall filters, pool plumbing, and submersible filter setups when used as an inline component.

• Compatible with 0.5in, 0.75in and 1in interfaces
• Requires an external pump to force water through the chamber
• Must remain dry externally—do not submerge the housing
• Mounting hardware and plumbing clamps recommended for secure installation

How long does the lamp last and what maintenance is needed?

The lamp is rated for about 8,000 hours of use; periodic replacement restores peak UV output. The stainless-steel housing helps resist corrosion and the unit requires minimal cleaning when pre-filtration captures large particles before they enter the chamber.

• UV lamp lifespan approximately 8,000 hours
• Replace lamp when output declines or annually for heavy-use systems
• Rinse or backwash pre-filters to maintain UV effectiveness
• Inspect seals and lamp sleeve periodically for wear or clouding

Who is this for? The coospider-repta 24W inline UV clarifier is aimed at hobbyists and small-scale professionals who want to add UV treatment to aquariums, koi ponds, cold plunge tubs, or small pools without redesigning existing filtration. It works well for those who already have circulation pumps and want a compact, corrosion-resistant UV solution to improve water clarity, manage green water, and reduce suspended algae—particularly when used alongside good mechanical filtration and routine maintenance. If you need continuous submerged sterilization or certified drinking-water disinfection, consult system requirements and local regulations before use.