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https://www.swelluk.com:443/swell-25-watt-uv-bulb/ 
Swell 25 Watt UV Bulb
These Swell 25 Watt UV Bulbs are double ended T8's for use in garden UV units, to help clarify your green water and achieve a crystal clear look in your pond. Suitable for use with any UVC unit with the correct wattage, they can only be purchased at Swell UK.
Product Information
Swell 25 watt T8 Double Ended UV replacement Bulbs/Tubes.
In the summer months algae can become a real nuisance in a garden pond and quickly decimate your once beautiful pond. Ultra Violet lamps work by treating the algae cells and forcing them to mass together for easier removal.
Swell bulbs use only the highest materials in their replacement bulbs, and by using high-quality UVC lamps guarantees a long lasting performance. For added value, if you buy one you get another free, so you can be confident that your pond or aquarium is covered!
Product Information
- Swell T8 Double Ended UV Bulbs are a double ended tube with two pins at either end.
- High UV output allows for greater algae control.
- Can be used on: Oase, Blagdon, Fish Mate, Hozelock, Aqua Medic UV's and any other UV device that requires T8 Double Ended UV Bulbs.
- Buy one get one free!
Latest Customer Reviews
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Rating Date 20/04/2021 08:04am Swell 25w UVC Bulb, 1 plus 1 free
great service and quick delivery. Bought UV pond lights and they were cheaper than anywhere else. Always used another on line company which were good but came across the company by chance and glad I did -
Rating Date 20/04/2021 04:04am Swell 25w UVC Bulb, 1 plus 1 free
Good price, and a very good offer. -
Rating Date 07/04/2021 10:04am Swell 25w UVC Bulb, 1 plus 1 free
used them for years good product excellent prices -
Rating Date 23/03/2021 11:03am Swell 25w UVC Bulb, 1 plus 1 free
bough before works ok pond clear after a couple off days and a good
price -
Rating Date 30/09/2020 10:09am Swell 25w UVC Bulb, 1 plus 1 free
This was a bogof purchase. I fitted one and it did not work. I did not bother with the other one. I bought a better quality one and it works perfect.Your product seems very poor quality. I can see why it’s bogof. -
Rating Date 25/09/2020 06:09am Swell 25w UVC Bulb, 1 plus 1 free
Super quality excellent service and good value. -
Rating Date 02/09/2020 07:09am Swell 25w UVC Bulb, 1 plus 1 free
Great 2 for 1 deal thats why I keep coming back -
Rating Date 16/08/2020 08:08am Swell 25w UVC Bulb, 1 plus 1 free
Price and quality as expected -
Rating Date 07/07/2020 09:07am Swell 25w UVC Bulb, 1 plus 1 free
Seems fine. But just had it a day -
Rating Date 02/07/2020 17:07pm Swell 25w UVC Bulb, 1 plus 1 free
Awaiting fitting so I haven't used it yet!!