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UVC Sterilisers

Pond UV's Kill Algae And Keep Water Clear

Why fit a Pond UV?
The water in newly filled ponds usually turns green after about fourteen days. There are three ways to remedy this, the first involves endless patience and a lot of pond plants, the second means using chemicals and the third is simply to fit a pond UV more correctly known as an Ultra Violet Clarifier.

How a Pond UV works

Most ultra violet clarifier (UVC) consists of a UV tube seperated from the water by a quartz jacket. Water passes through this jacket expossing it to the ultra-violet light emmitted by the tube. The uv light damages and disrupts the algae cells causing them to clump together and die. These large clumps of algae can then be removed from the water by filtering through a pond filter.

Koi Pond UV
Well-filtered ponds will always have a good growth of algae. So called "green water algae" are primitive plants that thrive on warmth, light and nutrients. During the spring and summer these conditions are met in Koi ponds to a far greater degree than in ponds that are heavily planted, and whose surfaces are shaded from the sun by the leaves of water lilies. Koi ponds tend, with a few exceptions, to be rather bare environments. in order for fish to be properly appreciated, water clarity is a prerequisite. Unfortunately, these types of shade-free ponds receiving direct sunlight can warm up and turn the colour of pea soup virtually overnight. These factors make it necessary to study the manufacturers recommendations as to the volume of water their uv units will treat very carefully. Koi ponds will require UV units two to four times larger than well planted goldfish ponds.

Why do I need a Filter & UV
Pond UV’s should be used in conjunction with a pond filter and I would normally recommend you buy your filter with a suitably sized UV incorporated. However there are circumstances where a stand alone UV would be beneficial. As fish grow they produce more waste, which will put added burden on your original pond UV and filter. You may have been tempted to add extra fish, this also increases the need to for additional UV clarification. Koi keepers who have built bespoke filters will also require a stand alone UV's. For Koi Keeper building his own filter we highly recommend Kockney Koi's Yamitsu Algae Master UC. They come with hose tails for connection to flexible hose but can also be plumped straight into rigid pipe.

Life of UV Tube

The power of pond uv clarifier tubes fades over time reducing the units ability to eliminate green water. This makes it important to change the uv tube regularly. PLS tubes (single ended) should be replaced annually whilst standard double ended uv tubes need replacing every six months.



Cleaning the UV Quartz Sleeve

Most pond uv units have a quartz glass tube that separates the uv's tube from the water. Over time dirt and calcium deposits build up on this quartz sleeve reducing the units effectiveness, so it is a good idea to clean these annually. Be very careful as quartz becomes brittle over time and it is easy to damage the sleeve when removing it from the unit.

Key Points

  • UV tubes MUST be repaced every 6-12 months
  • Quartz sleeves need cleaning
  • Waterflow through the unit must be maintained

 

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    The Blagdon MiniPond 6000 UV Clarifier is an effective chemical free way to control green water in garden ponds up to 6000 litre.Pond Size RatingShaded pond with average depth of 75 cm = 6000 litrePond in full sun = 4500 litreShallow pond (average depth...

    £95.99 £48.99
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  • Blagdon Pro UV Clarifier 16200 18w

    The Blagdon Pro 16200 UV Clarifier is an effective chemical free way to control green water in garden ponds up to 16200 litre.Pond Size RatingShaded pond with average depth of 75 cm = 16200 litrePond in full sun = 12150 litreShallow pond (average depth...

    £122.49 £89.99
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  • Blagdon Pro UV Clarifier 21600 24w Image

    Blagdon Pro UV Clarifier 21600 24w

    The Blagdon Pro 21600 UV Clarifier is an effective chemical free way to control green water in garden ponds up to 21600 litre.Pond Size RatingShaded pond with average depth of 75 cm = 21600 litrePond in full sun = 16200 litreShallow pond (average depth...

    £141.99 £114.99
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  • Blagdon Pro UV Clarifier 32400 36w

    The Blagdon Pro 32400 UV Clarifier is an effective chemical free way to control green water in garden ponds up to 32400 litre.Pond Size RatingShaded pond with average depth of 75 cm = 32400 litrePond in full sun = 24300 litreShallow pond (average depth...

    £169.99 £129.99
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    Blagdon Pro UV Clarifier 64800 72w

    The Blagdon Pro 64800 UV Clarifier is an effective chemical free way to control green water in garden ponds up to 64800 litre.Pond Size RatingShaded pond with average depth of 75 cm = 64800 litrePond in full sun = 48600 litreShallow pond (average depth...

    £329.99 £202.49
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  • Hozelock Vorton 18 Uvc 6000 Litre Image

    Hozelock Vorton 18 Uvc 6000 Litre

    Hozelock Vorton 18 UVC - Pond The Ultra Violet Clarifier (UVC) continues to form a key element of a clearwater system. The algae, causing greenwater, are made to clump together (flocculate) by the UV light so that they can be sieved out of the water by a...

    £219.99 £124.99
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  • Hozelock Vorton 36 Uvc 12000 Litre Image

    Hozelock Vorton 36 Uvc 12000 Litre

    Hozelock Vorton 36 UVC - Pond The Ultra Violet Clarifier (UVC) continues to form a key element of a clearwater system. The algae, causing greenwater, are made to clump together (flocculate) by the UV light so that they can be sieved out of the water by a...

    £239.99 £136.99
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  • Hozelock Vorton 55 Uvc 18500 Litre Image

    Hozelock Vorton 55 Uvc 18500 Litre

    Hozelock Vorton 55 Pond UVC Green Water Algae Killer For Ponds Upto 18500 LitreThe new Vorton 55w offers the optimum UVC power for the pond size up to 18500 litres. Higher 55wpowered UVC bulb help maximise the elimination of algae. Vorton 55w comes with...

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