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https://www.swelluk.com:443/swell-18-watt-pll-uv-bulb/ 
Swell 18 Watt PLL UV Bulb
Swell 18 Watt PLL UV Bulbs are single ended twin UV tubes for use in Oase, Blagdon and other suitable pond UVC's, but come at our amazingly low prices in comparison to branded units - a great replacement for your old one which may now have a reduced output.
Product Information
Swell 18w PLL UV replacement Bulbs / Tubes fit into a wide range of major pond branded equipment that requires PLL UV lamps.
Ultra Violet light eradicates single algae cells and forces them to mass together for easier removal. This means a clearer, algae free pond and generally better conditions for plants and fish.
Our own branded PLL bulbs compare more than favourably with the leading manufacturers, and thanks to our amazing buy get one free offer, you get fantastic value for money too!
Key Features:
- Swell PLL Bulbs are a single ended, twin tube with four pins at one end.
- High UV output allows for greater algae control.
- Can be used on: Oase Bitron, Blagdon UV's, Aqua Medic UV's and any other UV device that requires PLL.
- Buy one get one free!
Latest Customer Reviews
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Rating Date 10/09/2021 07:09am Swell 18w PLL UVC Bulb, 1 plus 1 free
Good service but confusing information regarding type of lamp i need -
Rating Date 29/08/2021 09:08am Swell 18w PLL UVC Bulb, 1 plus 1 free
Good value for money.
Arrived on time. -
Rating Date 03/08/2021 10:08am Swell 18w PLL UVC Bulb, 1 plus 1 free
it would have been pefect if a holder for the tubes was with it. i had to adapt the old one so dont through away the old tube holder. it did come very quickly so a plus. -
Rating Date 26/05/2021 03:05am Swell 18w PLL UVC Bulb, 1 plus 1 free
Product arrived within 3 days -
Rating Date 28/04/2021 09:04am Swell 18w PLL UVC Bulb, 1 plus 1 free
One fitted and working, additional BOGOF offer gives me a spare at good price. -
Rating Date 20/04/2021 04:04am Swell 18w PLL UVC Bulb, 1 plus 1 free
Good price, delivered well within the five days. -
Rating Date 11/04/2021 09:04am Swell 18w PLL UVC Bulb, 1 plus 1 free
Exactly what I wanted and is doing the job well -
Rating Date 02/04/2021 07:04am Swell 18w PLL UVC Bulb, 1 plus 1 free
Not wired up the bulbs yet but impressed with price and now have spares -
Rating Date 21/03/2021 15:03pm Swell 18w PLL UVC Bulb, 1 plus 1 free
I can't fault your service at all -
Rating Date 16/03/2021 08:03am Swell 18w PLL UVC Bulb, 1 plus 1 free
quality items. i do often look on there site for items that i can improve on my ponds