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Stainless Steel UV-C Clarifiers

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Matala Stainless Steel UV-C Clarifier

Matala Stainless Steel UV-C Clarifier works 24 hours a day, 7 days a week, 365 days a year, to ensure your water remains clean and health for the absolute best viewing of Koi fish, aquatic life, and water gardens.

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The single best approach to controlling green water algae blooms. Easy and quick installation featuring a long service life that requires little maintenance. The Matala Stainless Steel High Output UV Clarifier is the best priced sterilizer in its class.

The flow rates listed on the specifications chart are suggested for clarification of green water blooms only. Slower flow rates will increase the kill rate of water borne bacteria. Try to max out the recommended flow rate of the unit to get the best results for clarification.


High Quality lamp and quartz sleeve maintains high output of 254nm
40-Watt model uses 40 watt high output Phillips UV lamps
75, 150, and 300-Watt models use 75 watt high output Phillips UV lamps
75 watt unit is a single lamp, 150 watt unit uses two lamps, 300 watt unit uses four lamps
Quick and simple installation
High flow rates possible due to high output lamps, and a single big bore body diameter
Does not restrict pump water flow
Long service life and requires little maintenance
Visual LED display indicates when unit needs service
Polished stainless steel reactor chamber gives 30% increased UV reflection
Includes 17 foot power cord with in line transformer
2" inlet / outlet male threads


Algae Control - No more green water - UV-Clarifiers kill 99% of single cell floating algae (green water) as well as a small percentage of disease organisms. They do not harm the beneficial bacteria that grow in filters and on rocks, etc. in the pond. They only kill the organisms that pass through the UV.

How does a UV Filter clear green water?
Single-celled green algae, (Chlorella vulgaris) require light and nutrients to thrive. It is one sign that your pond is generally healthy but it does not assist in your overall enjoyment of viewing Koi fish and other aquatic life.

These small algae cells can pass through all conventional filters, making filtering them out of your pond, lake, or water garden very difficult and practically impossible. However, passing the cells through a UV either kills them or disrupts their internal structure. The particles that survive will clump together or 'flocculate'. These clumps can then be trapped and broken down by the filter.

When to use a UV:
Most Koi breeders, growers, and enthusiasts will keep their UV sterilizers working year round. For smaller garden ponds you may find that only in the spring, with the combination of longer days and an upsurge in fish activity, is UV necessary. If you do run your UV year-round it must be protected from frost in a well-ventilated housing. Remember it is important to replace your UV lamps annually for peak performance. Dim lamps and dirty quartz sleeves significantly reduce the effectiveness of ultraviolet clarifiers.

How much UV do you need for your pond?
To eradicate green water, 8-10 watts per 1,000 gallons is usually recommended. To properly size your UV you must consider your pond gallons, the filter size, the amount of sunshine per day and the fish load. Feeding practices are another important variable to consider as excess organic material in the water greatly increases algae blooms. A very sunny pond with a lot of Koi and a small filter will need more UV power to bring clarity. You may consider upping the size your UV in order to give the best results for your specific situation.

It is possible to kill some harmful bacteria by passing the water very slowly through the UV but in general it is only practical if your UV unit is very large. Some pond owners will maintain that level of ultraviolet sterilization for a reduction of bacterial levels. The wattage size of the UV can be increased threefold to 30 watts per 1000 gallons to accomplish this feat.

What is the correct flow rate through the UV?
Every UV unit has a suggested maximum flow rate listed in the literature or on the unit itself. While there is a considerable safety factor in regards to flow rate it is advisable to try to reach the maximum flow for the unit. This will ensure you are getting the most efficient use of the ultraviolet lighting. Another very important consideration is the pond gallons in relation to the flow rate through the UV. The goal is to pass the pond volume through the UV a minimum of one time every two hours. This is 12 pond turnovers per day. A slower turnover than this will allow the algae to grow faster than the UV can kill it. You will get better results when you pass the pond volume through the UV one time every hour. Check the recommended flow rate on your unit and try not to exceed it.

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