The Pond Guy UltraUV Ultraviolet Pond Water Clarifier - 13W, EPA Registered

Crystal clear pond water, season after season

Bright sun can push garden ponds toward a green tinge caused by microscopic algae. The Pond Guy UltraUV 13W Pond Water Clarifier uses UV-C light to target ultrafine planktonic algae, helping water regain its natural clarity. The compact, EPA-registered device integrates with most pond filtration setups and is designed to work with your existing pump and biological filter. With regular use, you may notice the water appearing crisper and more inviting as light plays on the surface.

How UltraUV works

The unit channels water through a durable vortex chamber, exposing each drop to the UV bulb several times before it exits. This arrangement helps maximize exposure and supports clearer water without major system changes.

• UV-C light targets ultrafine algae that cause green water, reducing the visible tint.
• UV radiation weakens algae cells, helping your biological filter perform more efficiently.
• The vortex chamber continually circulates water around the bulb for thorough treatment.
• Results can appear in as little as 48 hours when the pond's pump is properly sized for the flow.
• EPA registered equipment designed for small ponds with algae and water quality concerns.

What this means for your pond and life

• Sharper water clarity and more natural color reflections, even during bright days.
• Compatibility with common pond residents—koi, goldfish, plants, ducks, and turtles—when installed according to guidelines.
• Low-maintenance addition to your routine that supports a healthy aquatic environment.
• Clear information and safety standards reflected in the EPA registration of the equipment.

Important notes: Ensure you pair UltraUV with a pump that provides appropriate flow for your pond size. The device is designed to work with standard pond filtration and does not replace routine cleaning or other water care tasks.