Vitronic 18 W

Green water is caused by microscopic single‑cell algae suspended in the pond. The OASE Vitronic 18 W is a compact inline UV‑C clarifier designed to control this issue in pump‑fed garden pond systems.

With an 18‑watt UV‑C lamp, it supports clearer water when used alongside a suitable mechanical and biological filter.

 

What It Does

As pond water flows through the unit, it passes a UV‑C lamp housed inside a protective quartz sleeve.

The ultraviolet light:

• Disrupts single‑cell algae
• Causes the algae to clump together
• Allows your filter to trap and remove the particles

UV‑C improves water clarity, but it does not replace proper filtration.

 

Where It Fits in Your System

The Vitronic 18 W is designed for inline installation in pump‑fed systems.

Typical layout:
Pump → Vitronic 18 W → Filter → Return to pond

Positioning the UV before the filter allows clumped algae to be captured efficiently.

 

Key Features

• 18‑watt UV‑C lamp
• Inline design for pump‑fed ponds
• Suitable for small to medium ornamental ponds
• Works alongside mechanical and biological filtration

Correct sizing depends on pond volume and pump flow rate.

 

Maintenance & Safety

UV‑C performance declines over time, even if the lamp still lights.

• Replace the UV‑C lamp annually
• Clean the quartz sleeve periodically to prevent limescale build‑up
• Always unplug before opening the unit
• Never look directly at an operating UV‑C lamp
• Avoid skin exposure to UV light

Regular maintenance ensures consistent clarification through the season.

 

Who It’s For

• Ornamental garden ponds experiencing green water
• Pump‑fed filtration systems
• Ponds needing improved water clarity

If you share your pond volume and pump flow rate, I’ll confirm whether the 18 W model is the right size for your setup.

 

Technical data