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Oase Bitron C UVC Clarifiers

Reliable High Performance UV Clarification for Koi and Garden Ponds

The Oase Bitron C range is designed to deliver powerful and dependable green water control for koi ponds, fish ponds and larger ornamental systems. These high performance ultraviolet clarifiers use UV-C radiation to neutralise suspended algae and reduce harmful bacteria, resulting in clearer and healthier pond water.

Unlike entry level UV units, Bitron C models feature patented automatic cleaning technology and intelligent bypass systems. As a result, they maintain strong irradiation performance even at higher flow rates, making them ideal for well stocked koi ponds and advanced filtration systems.

Effective Green Water and Algae Control

Green water is caused by free floating single celled algae that multiply rapidly in sunlight. The Oase Bitron C exposes pond water to ultraviolet radiation as it passes through the unit. This disrupts the DNA of algae cells and prevents reproduction. Consequently, the algae begin to clump together and can then be removed by mechanical filtration.

In addition to suspended algae control, Bitron C units reduce harmful bacteria and pathogen levels within the water column. This supports overall pond stability and helps create a healthier environment for fish and aquatic life.

Patented Automatic Cleaning Rotor

One of the key features of the Bitron C range is the patented automatic cleaning rotor. As water flows through the unit, the rotor continuously moves around the quartz glass sleeve.

This prevents limescale and debris from settling on the sleeve surface. As a result, UV penetration remains consistent without the need for regular manual cleaning. This significantly improves reliability compared to basic UV clarifiers.

Intelligent Bypass and Flow Regulation

Bitron C models incorporate a clever bypass system that balances flow rate with irradiation duration. Even at higher flow rates, water is exposed to sufficient ultraviolet radiation to ensure effective algae control.

An adjustable throttle handle allows the user to regulate water flow precisely. This makes it easier to match the UV clarifier to the connected pond pump and filtration system.

Designed for Integration with Oase Filtration

The Bitron C range integrates seamlessly with:

When combined with Oase mechanical and biological filtration, the Bitron C forms a complete and balanced pond filtration setup.

Available Models

The Oase Bitron C range includes multiple wattage options to suit different pond sizes and fish stocking levels:

24 Watt, 36 Watt, 55 Watt, 72 Watt, 110 Watt

Each model offers automatic cleaning, high flow capability and robust construction designed for long term outdoor use.

Why Buy Your Oase Bitron C from Us

Choosing the correct UV clarifier is essential for long term water clarity and fish health. We specialise in pond filtration systems and high performance koi pond setups, so we do not simply supply equipment — we specify it correctly.

When you purchase from us, you benefit from:

  • Practical guidance on correct UV sizing
  • Advice on flow rate matching
  • Compatibility checks with your existing filter
  • Support with installation planning
  • Genuine Oase products with full manufacturer warranty

Because we work daily with gravity fed and pump fed filtration systems, we understand how UV clarifiers perform in real world pond environments. As a result, you receive the right solution for your pond, not just a product.

Oase Bitron C UVC – Frequently Asked Questions


What does the Oase Bitron C UVC actually do in a pond system?

The Oase Bitron C is a high performance ultraviolet clarifier designed to control green water and reduce harmful microorganisms in koi ponds and garden ponds. It uses UV-C radiation to neutralise suspended single celled algae as water passes through the unit.

By disrupting the DNA of these algae cells, reproduction stops immediately. As a result, the algae clump together and can then be removed by mechanical filtration such as a drum filter or flow through filter.

In addition, the Bitron C reduces harmful bacteria and pathogen levels within the water column, supporting overall pond stability and fish health.


Is the Bitron C a steriliser or a clarifier?

In pond terms, the Bitron C functions primarily as a clarifier. Its main purpose is to control suspended algae and improve water clarity.

While it does reduce harmful bacteria levels, it is not a medical sterilisation device. Instead, it works alongside mechanical and biological filtration to maintain balanced water conditions.


How does the automatic cleaning rotor improve performance?

The patented automatic cleaning rotor is one of the key features that separates the Bitron C from basic UV units.

As water flows through the unit, the rotor continuously moves around the quartz glass sleeve. This prevents limescale and debris from building up on the sleeve surface.

Because of this, ultraviolet penetration remains strong and consistent without frequent manual cleaning. Consequently, the UV unit maintains higher long term efficiency compared to standard clarifiers that require regular sleeve maintenance.


What size Bitron C do I need for my pond?

Correct sizing depends on three main factors:

  • Total pond volume
  • Fish stocking level
  • Pump flow rate

Heavily stocked koi ponds require more UV power than lightly stocked ornamental ponds. In addition, if your pump pushes water through the UV too quickly, exposure time can be reduced.

The Bitron C range includes 24W, 36W, 55W, 72W and 110W models to suit a wide range of pond sizes. Selecting the correct wattage ensures reliable green water control throughout the season.


What flow rate should I run through a Bitron C?

Each Bitron C model has a recommended maximum flow rate. Running water too quickly through a UV clarifier can reduce irradiation time and limit effectiveness.

The built in bypass system helps balance flow rate with exposure duration. In addition, the adjustable throttle handle allows precise regulation of water flow to match your pump and filter setup.

For best results, always match the UV wattage to both pond volume and pump output.


Can the Bitron C be used on both pump fed and gravity fed systems?

Yes. The Bitron C can be installed on both pump fed and gravity fed filtration systems.

It integrates particularly well with Oase BioSmart, BioTec and BioTec ScreenMatic filters. It can also be used alongside drum filter systems provided flow rates are correctly matched.

Correct installation position is important. Ideally, the UV clarifier should be installed after mechanical filtration so suspended solids do not shield algae from UV exposure.


Does the Bitron C harm beneficial filter bacteria?

No. Beneficial nitrifying bacteria live on biological filter media surfaces. The UV clarifier only affects organisms suspended in the water column that pass directly through the irradiation chamber.

Therefore, your biological filtration remains intact while suspended algae and harmful bacteria levels are reduced.


How often should I replace the UV bulb?

Although the UV bulb may still illuminate after extended use, UV output gradually reduces over time.

For consistent green water control in koi ponds, annual lamp replacement is recommended, ideally at the start of the pond season. This ensures maximum irradiation strength during peak algae growth.


What maintenance does the Bitron C require?

Thanks to the automatic cleaning rotor, maintenance requirements are relatively low.

Recommended maintenance includes:

  • Annual UV bulb replacement
  • Periodic inspection of quartz sleeve condition
  • Checking flow rate
  • Verifying lamp operation via the inspection window

Because the rotor continuously cleans the sleeve, manual descaling is required far less often than with basic UV units.


Will a Bitron C clear my pond overnight?

UV clarifiers do not provide instant clarity. Once installed correctly, the unit begins neutralising algae immediately. However, visible improvement typically occurs over several days as clumped algae are removed by the filtration system.

Heavily stocked ponds or severe algae blooms may take slightly longer to fully clear.


Is Bitron C suitable for heavily stocked koi ponds?

Yes, provided the correct wattage is selected.

For heavily stocked koi ponds, larger models such as the 72W or 110W are often more appropriate. Proper sizing ensures sufficient UV exposure even with high biological load and strong pump turnover.


What is the difference between Bitron C and Bitron Eco?

The Bitron C range is designed for reliable, high performance algae control in standard to large pond systems.

The Bitron Eco range offers additional features including:

  • Intelligent eco control technology
  • Automatic seasonal power adjustment
  • Higher maximum output models
  • Enhanced energy efficiency

Bitron C is ideal for most koi and garden ponds. Bitron Eco is better suited to very large, high flow or commercial installations.


Can I run the Bitron C continuously?

Yes. The unit is designed for continuous operation during the pond season.

For winter operation, many pond keepers switch the UV off when water temperatures drop and algae growth slows significantly. However, this depends on individual pond conditions.